Enhance Inbox model and related services for improved error handling and resilience

Add a new field `consecutiveFailures` to the Inbox model to track consecutive errors. Update the inbox guard logic to mark mailboxes as error after exceeding a failure threshold. Implement retry logic in email and IMAP services to handle transient connection issues. Adjust job processing to reclaim stale send jobs and improve overall reliability of email dispatching. Update routes to initialize `consecutiveFailures` on inbox creation and reset it when the inbox status changes to active.

apps/api/src/generated/prisma/internal/prismaNamespace.ts

@@ -1247,6 +1247,7 @@ export const InboxScalarFieldEnum = {
   companyName: 'companyName',
   lastError: 'lastError',
   errorAt: 'errorAt',
+  consecutiveFailures: 'consecutiveFailures',
   spamFolderPath: 'spamFolderPath',
   lastSpamRescuedAt: 'lastSpamRescuedAt',
   createdAt: 'createdAt',

apps/api/src/generated/prisma/internal/prismaNamespaceBrowser.ts

@@ -134,6 +134,7 @@ export const InboxScalarFieldEnum = {
   companyName: 'companyName',
   lastError: 'lastError',
   errorAt: 'errorAt',
+  consecutiveFailures: 'consecutiveFailures',
   spamFolderPath: 'spamFolderPath',
   lastSpamRescuedAt: 'lastSpamRescuedAt',
   createdAt: 'createdAt',

apps/api/src/generated/prisma/models/Inbox.ts

@@ -31,6 +31,7 @@ export type InboxAvgAggregateOutputType = {
   imapPort: number | null
   dailyLimit: number | null
   currentRamp: number | null
+  consecutiveFailures: number | null
 }
 
 export type InboxSumAggregateOutputType = {
@@ -38,6 +39,7 @@ export type InboxSumAggregateOutputType = {
   imapPort: number | null
   dailyLimit: number | null
   currentRamp: number | null
+  consecutiveFailures: number | null
 }
 
 export type InboxMinAggregateOutputType = {
@@ -62,6 +64,7 @@ export type InboxMinAggregateOutputType = {
   companyName: string | null
   lastError: string | null
   errorAt: Date | null
+  consecutiveFailures: number | null
   spamFolderPath: string | null
   lastSpamRescuedAt: Date | null
   createdAt: Date | null
@@ -90,6 +93,7 @@ export type InboxMaxAggregateOutputType = {
   companyName: string | null
   lastError: string | null
   errorAt: Date | null
+  consecutiveFailures: number | null
   spamFolderPath: string | null
   lastSpamRescuedAt: Date | null
   createdAt: Date | null
@@ -118,6 +122,7 @@ export type InboxCountAggregateOutputType = {
   companyName: number
   lastError: number
   errorAt: number
+  consecutiveFailures: number
   spamFolderPath: number
   lastSpamRescuedAt: number
   createdAt: number
@@ -131,6 +136,7 @@ export type InboxAvgAggregateInputType = {
   imapPort?: true
   dailyLimit?: true
   currentRamp?: true
+  consecutiveFailures?: true
 }
 
 export type InboxSumAggregateInputType = {
@@ -138,6 +144,7 @@ export type InboxSumAggregateInputType = {
   imapPort?: true
   dailyLimit?: true
   currentRamp?: true
+  consecutiveFailures?: true
 }
 
 export type InboxMinAggregateInputType = {
@@ -162,6 +169,7 @@ export type InboxMinAggregateInputType = {
   companyName?: true
   lastError?: true
   errorAt?: true
+  consecutiveFailures?: true
   spamFolderPath?: true
   lastSpamRescuedAt?: true
   createdAt?: true
@@ -190,6 +198,7 @@ export type InboxMaxAggregateInputType = {
   companyName?: true
   lastError?: true
   errorAt?: true
+  consecutiveFailures?: true
   spamFolderPath?: true
   lastSpamRescuedAt?: true
   createdAt?: true
@@ -218,6 +227,7 @@ export type InboxCountAggregateInputType = {
   companyName?: true
   lastError?: true
   errorAt?: true
+  consecutiveFailures?: true
   spamFolderPath?: true
   lastSpamRescuedAt?: true
   createdAt?: true
@@ -333,6 +343,7 @@ export type InboxGroupByOutputType = {
   companyName: string | null
   lastError: string | null
   errorAt: Date | null
+  consecutiveFailures: number
   spamFolderPath: string | null
   lastSpamRescuedAt: Date | null
   createdAt: Date
@@ -384,6 +395,7 @@ export type InboxWhereInput = {
   companyName?: Prisma.StringNullableFilter<"Inbox"> | string | null
   lastError?: Prisma.StringNullableFilter<"Inbox"> | string | null
   errorAt?: Prisma.DateTimeNullableFilter<"Inbox"> | Date | string | null
+  consecutiveFailures?: Prisma.IntFilter<"Inbox"> | number
   spamFolderPath?: Prisma.StringNullableFilter<"Inbox"> | string | null
   lastSpamRescuedAt?: Prisma.DateTimeNullableFilter<"Inbox"> | Date | string | null
   createdAt?: Prisma.DateTimeFilter<"Inbox"> | Date | string
@@ -417,6 +429,7 @@ export type InboxOrderByWithRelationInput = {
   companyName?: Prisma.SortOrderInput | Prisma.SortOrder
   lastError?: Prisma.SortOrderInput | Prisma.SortOrder
   errorAt?: Prisma.SortOrderInput | Prisma.SortOrder
+  consecutiveFailures?: Prisma.SortOrder
   spamFolderPath?: Prisma.SortOrderInput | Prisma.SortOrder
   lastSpamRescuedAt?: Prisma.SortOrderInput | Prisma.SortOrder
   createdAt?: Prisma.SortOrder
@@ -454,6 +467,7 @@ export type InboxWhereUniqueInput = Prisma.AtLeast<{
   companyName?: Prisma.StringNullableFilter<"Inbox"> | string | null
   lastError?: Prisma.StringNullableFilter<"Inbox"> | string | null
   errorAt?: Prisma.DateTimeNullableFilter<"Inbox"> | Date | string | null
+  consecutiveFailures?: Prisma.IntFilter<"Inbox"> | number
   spamFolderPath?: Prisma.StringNullableFilter<"Inbox"> | string | null
   lastSpamRescuedAt?: Prisma.DateTimeNullableFilter<"Inbox"> | Date | string | null
   createdAt?: Prisma.DateTimeFilter<"Inbox"> | Date | string
@@ -487,6 +501,7 @@ export type InboxOrderByWithAggregationInput = {
   companyName?: Prisma.SortOrderInput | Prisma.SortOrder
   lastError?: Prisma.SortOrderInput | Prisma.SortOrder
   errorAt?: Prisma.SortOrderInput | Prisma.SortOrder
+  consecutiveFailures?: Prisma.SortOrder
   spamFolderPath?: Prisma.SortOrderInput | Prisma.SortOrder
   lastSpamRescuedAt?: Prisma.SortOrderInput | Prisma.SortOrder
   createdAt?: Prisma.SortOrder
@@ -523,6 +538,7 @@ export type InboxScalarWhereWithAggregatesInput = {
   companyName?: Prisma.StringNullableWithAggregatesFilter<"Inbox"> | string | null
   lastError?: Prisma.StringNullableWithAggregatesFilter<"Inbox"> | string | null
   errorAt?: Prisma.DateTimeNullableWithAggregatesFilter<"Inbox"> | Date | string | null
+  consecutiveFailures?: Prisma.IntWithAggregatesFilter<"Inbox"> | number
   spamFolderPath?: Prisma.StringNullableWithAggregatesFilter<"Inbox"> | string | null
   lastSpamRescuedAt?: Prisma.DateTimeNullableWithAggregatesFilter<"Inbox"> | Date | string | null
   createdAt?: Prisma.DateTimeWithAggregatesFilter<"Inbox"> | Date | string
@@ -550,6 +566,7 @@ export type InboxCreateInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -583,6 +600,7 @@ export type InboxUncheckedCreateInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -614,6 +632,7 @@ export type InboxUpdateInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -647,6 +666,7 @@ export type InboxUncheckedUpdateInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -679,6 +699,7 @@ export type InboxCreateManyInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -706,6 +727,7 @@ export type InboxUpdateManyMutationInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -734,6 +756,7 @@ export type InboxUncheckedUpdateManyInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -777,6 +800,7 @@ export type InboxCountOrderByAggregateInput = {
   companyName?: Prisma.SortOrder
   lastError?: Prisma.SortOrder
   errorAt?: Prisma.SortOrder
+  consecutiveFailures?: Prisma.SortOrder
   spamFolderPath?: Prisma.SortOrder
   lastSpamRescuedAt?: Prisma.SortOrder
   createdAt?: Prisma.SortOrder
@@ -788,6 +812,7 @@ export type InboxAvgOrderByAggregateInput = {
   imapPort?: Prisma.SortOrder
   dailyLimit?: Prisma.SortOrder
   currentRamp?: Prisma.SortOrder
+  consecutiveFailures?: Prisma.SortOrder
 }
 
 export type InboxMaxOrderByAggregateInput = {
@@ -812,6 +837,7 @@ export type InboxMaxOrderByAggregateInput = {
   companyName?: Prisma.SortOrder
   lastError?: Prisma.SortOrder
   errorAt?: Prisma.SortOrder
+  consecutiveFailures?: Prisma.SortOrder
   spamFolderPath?: Prisma.SortOrder
   lastSpamRescuedAt?: Prisma.SortOrder
   createdAt?: Prisma.SortOrder
@@ -840,6 +866,7 @@ export type InboxMinOrderByAggregateInput = {
   companyName?: Prisma.SortOrder
   lastError?: Prisma.SortOrder
   errorAt?: Prisma.SortOrder
+  consecutiveFailures?: Prisma.SortOrder
   spamFolderPath?: Prisma.SortOrder
   lastSpamRescuedAt?: Prisma.SortOrder
   createdAt?: Prisma.SortOrder
@@ -851,6 +878,7 @@ export type InboxSumOrderByAggregateInput = {
   imapPort?: Prisma.SortOrder
   dailyLimit?: Prisma.SortOrder
   currentRamp?: Prisma.SortOrder
+  consecutiveFailures?: Prisma.SortOrder
 }
 
 export type InboxScalarRelationFilter = {
@@ -1001,6 +1029,7 @@ export type InboxCreateWithoutWorkspaceInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -1032,6 +1061,7 @@ export type InboxUncheckedCreateWithoutWorkspaceInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -1092,6 +1122,7 @@ export type InboxScalarWhereInput = {
   companyName?: Prisma.StringNullableFilter<"Inbox"> | string | null
   lastError?: Prisma.StringNullableFilter<"Inbox"> | string | null
   errorAt?: Prisma.DateTimeNullableFilter<"Inbox"> | Date | string | null
+  consecutiveFailures?: Prisma.IntFilter<"Inbox"> | number
   spamFolderPath?: Prisma.StringNullableFilter<"Inbox"> | string | null
   lastSpamRescuedAt?: Prisma.DateTimeNullableFilter<"Inbox"> | Date | string | null
   createdAt?: Prisma.DateTimeFilter<"Inbox"> | Date | string
@@ -1119,6 +1150,7 @@ export type InboxCreateWithoutPrimaryCampaignsInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -1151,6 +1183,7 @@ export type InboxUncheckedCreateWithoutPrimaryCampaignsInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -1197,6 +1230,7 @@ export type InboxUpdateWithoutPrimaryCampaignsInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -1229,6 +1263,7 @@ export type InboxUncheckedUpdateWithoutPrimaryCampaignsInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -1259,6 +1294,7 @@ export type InboxCreateWithoutSatelliteCampaignsInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -1291,6 +1327,7 @@ export type InboxUncheckedCreateWithoutSatelliteCampaignsInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -1337,6 +1374,7 @@ export type InboxUpdateWithoutSatelliteCampaignsInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -1369,6 +1407,7 @@ export type InboxUncheckedUpdateWithoutSatelliteCampaignsInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -1399,6 +1438,7 @@ export type InboxCreateWithoutSentLogsInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -1431,6 +1471,7 @@ export type InboxUncheckedCreateWithoutSentLogsInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -1466,6 +1507,7 @@ export type InboxCreateWithoutReceivedLogsInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -1498,6 +1540,7 @@ export type InboxUncheckedCreateWithoutReceivedLogsInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -1544,6 +1587,7 @@ export type InboxUpdateWithoutSentLogsInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -1576,6 +1620,7 @@ export type InboxUncheckedUpdateWithoutSentLogsInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -1617,6 +1662,7 @@ export type InboxUpdateWithoutReceivedLogsInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -1649,6 +1695,7 @@ export type InboxUncheckedUpdateWithoutReceivedLogsInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -1679,6 +1726,7 @@ export type InboxCreateManyWorkspaceInput = {
   companyName?: string | null
   lastError?: string | null
   errorAt?: Date | string | null
+  consecutiveFailures?: number
   spamFolderPath?: string | null
   lastSpamRescuedAt?: Date | string | null
   createdAt?: Date | string
@@ -1706,6 +1754,7 @@ export type InboxUpdateWithoutWorkspaceInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -1737,6 +1786,7 @@ export type InboxUncheckedUpdateWithoutWorkspaceInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -1768,6 +1818,7 @@ export type InboxUncheckedUpdateManyWithoutWorkspaceInput = {
   companyName?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastError?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   errorAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
+  consecutiveFailures?: Prisma.IntFieldUpdateOperationsInput | number
   spamFolderPath?: Prisma.NullableStringFieldUpdateOperationsInput | string | null
   lastSpamRescuedAt?: Prisma.NullableDateTimeFieldUpdateOperationsInput | Date | string | null
   createdAt?: Prisma.DateTimeFieldUpdateOperationsInput | Date | string
@@ -1854,6 +1905,7 @@ export type InboxSelect<ExtArgs extends runtime.Types.Extensions.InternalArgs =
   companyName?: boolean
   lastError?: boolean
   errorAt?: boolean
+  consecutiveFailures?: boolean
   spamFolderPath?: boolean
   lastSpamRescuedAt?: boolean
   createdAt?: boolean
@@ -1888,6 +1940,7 @@ export type InboxSelectCreateManyAndReturn<ExtArgs extends runtime.Types.Extensi
   companyName?: boolean
   lastError?: boolean
   errorAt?: boolean
+  consecutiveFailures?: boolean
   spamFolderPath?: boolean
   lastSpamRescuedAt?: boolean
   createdAt?: boolean
@@ -1917,6 +1970,7 @@ export type InboxSelectUpdateManyAndReturn<ExtArgs extends runtime.Types.Extensi
   companyName?: boolean
   lastError?: boolean
   errorAt?: boolean
+  consecutiveFailures?: boolean
   spamFolderPath?: boolean
   lastSpamRescuedAt?: boolean
   createdAt?: boolean
@@ -1946,13 +2000,14 @@ export type InboxSelectScalar = {
   companyName?: boolean
   lastError?: boolean
   errorAt?: boolean
+  consecutiveFailures?: boolean
   spamFolderPath?: boolean
   lastSpamRescuedAt?: boolean
   createdAt?: boolean
   updatedAt?: boolean
 }
 
-export type InboxOmit<ExtArgs extends runtime.Types.Extensions.InternalArgs = runtime.Types.Extensions.DefaultArgs> = runtime.Types.Extensions.GetOmit<"id" | "workspaceId" | "email" | "smtpHost" | "smtpPort" | "imapHost" | "imapPort" | "username" | "password" | "authType" | "oauthRefreshToken" | "role" | "provider" | "status" | "dailyLimit" | "currentRamp" | "industry" | "senderName" | "companyName" | "lastError" | "errorAt" | "spamFolderPath" | "lastSpamRescuedAt" | "createdAt" | "updatedAt", ExtArgs["result"]["inbox"]>
+export type InboxOmit<ExtArgs extends runtime.Types.Extensions.InternalArgs = runtime.Types.Extensions.DefaultArgs> = runtime.Types.Extensions.GetOmit<"id" | "workspaceId" | "email" | "smtpHost" | "smtpPort" | "imapHost" | "imapPort" | "username" | "password" | "authType" | "oauthRefreshToken" | "role" | "provider" | "status" | "dailyLimit" | "currentRamp" | "industry" | "senderName" | "companyName" | "lastError" | "errorAt" | "consecutiveFailures" | "spamFolderPath" | "lastSpamRescuedAt" | "createdAt" | "updatedAt", ExtArgs["result"]["inbox"]>
 export type InboxInclude<ExtArgs extends runtime.Types.Extensions.InternalArgs = runtime.Types.Extensions.DefaultArgs> = {
   workspace?: boolean | Prisma.WorkspaceDefaultArgs<ExtArgs>
   sentLogs?: boolean | Prisma.Inbox$sentLogsArgs<ExtArgs>
@@ -1999,6 +2054,7 @@ export type $InboxPayload<ExtArgs extends runtime.Types.Extensions.InternalArgs
     companyName: string | null
     lastError: string | null
     errorAt: Date | null
+    consecutiveFailures: number
     spamFolderPath: string | null
     lastSpamRescuedAt: Date | null
     createdAt: Date
@@ -2452,6 +2508,7 @@ export interface InboxFieldRefs {
   readonly companyName: Prisma.FieldRef<"Inbox", 'String'>
   readonly lastError: Prisma.FieldRef<"Inbox", 'String'>
   readonly errorAt: Prisma.FieldRef<"Inbox", 'DateTime'>
+  readonly consecutiveFailures: Prisma.FieldRef<"Inbox", 'Int'>
   readonly spamFolderPath: Prisma.FieldRef<"Inbox", 'String'>
   readonly lastSpamRescuedAt: Prisma.FieldRef<"Inbox", 'DateTime'>
   readonly createdAt: Prisma.FieldRef<"Inbox", 'DateTime'>

apps/api/src/jobs/campaign-dispatcher.job.ts

@@ -11,6 +11,7 @@ import {
   claimDueSendJob,
   completeSendJob,
   enqueueSendJob,
+  reclaimStaleSendJobs,
 } from '../services/job-queue.service';
 
 const MIN_JITTER_MS = 45 * 60 * 1000;
@@ -79,12 +80,19 @@ async function executeCampaignSend(
   const satellite = pickWeightedSatellite(activeSatellites);
   const primary = campaign.primaryMailbox;
 
-  if (primary.status !== InboxStatus.active) {
+  if (primary.status === InboxStatus.paused) {
-    logger.warn({ campaignId }, 'Primary mailbox is not active');
+    logger.warn({ campaignId }, 'Primary mailbox is paused — skipping send');
-    if (jobId) await completeSendJob(jobId, false, 'Primary mailbox inactive');
+    if (jobId) await completeSendJob(jobId, false, 'Primary mailbox paused');
     return;
   }
 
+  if (primary.status === InboxStatus.error) {
+    logger.warn(
+      { campaignId, primary: primary.email },
+      'Primary mailbox in error — proceeding with satellite send (IMAP not required)',
+    );
+  }
+
   if (!isAllowedWarmupSendPair(satellite, primary)) {
     logger.warn(
       { campaignId, satellite: satellite.email, primary: primary.email },
@@ -94,13 +102,14 @@ async function executeCampaignSend(
     return;
   }
 
-  await withInboxGuard(satellite, async () => {
+  try {
     const { subject, body, validationResult } =
       await aiService.generateInitialEmailWithValidation(primary.industry, {
         senderName: satellite.senderName,
         companyName: satellite.companyName,
       });
 
+    await withInboxGuard(satellite, async () => {
       const { messageId } = await emailService.sendMail(satellite, {
         to: primary.email,
         subject,
@@ -139,8 +148,6 @@ async function executeCampaignSend(
         });
       });
 
-    if (jobId) await completeSendJob(jobId, true);
-
       logger.info(
         {
           campaignId: campaign.id,
@@ -151,11 +158,20 @@ async function executeCampaignSend(
         'Campaign warmup email dispatched',
       );
     });
+
+    if (jobId) await completeSendJob(jobId, true);
+  } catch (err) {
+    const message = err instanceof Error ? err.message : 'Campaign send failed';
+    if (jobId) await completeSendJob(jobId, false, message);
+    throw err;
+  }
 }
 
 export async function runCampaignDispatcherJob(): Promise<string> {
   logger.info('Campaign dispatcher job started');
 
+  await reclaimStaleSendJobs();
+
   const campaigns = await prisma.warmupCampaign.findMany({
     where: {
       status: { in: [CampaignStatus.active, CampaignStatus.maintenance] },

apps/api/src/jobs/dispatcher.job.ts

@@ -93,11 +93,12 @@ export async function runDispatcherJob(): Promise<void> {
         continue;
       }
 
-      await withInboxGuard(sender, async () => {
       const { subject, body } = await aiService.generateInitialEmail(sender.industry, {
         senderName: sender.senderName,
         companyName: sender.companyName,
       });
+
+      await withInboxGuard(sender, async () => {
         const { messageId } = await emailService.sendMail(sender, {
           to: receiver.email,
           subject,

apps/api/src/jobs/rescuer.job.ts

@@ -458,7 +458,7 @@ export async function runRescuerJob(): Promise<void> {
 
     for (const primaryMailboxId of primaryIds) {
       const inbox = await prisma.inbox.findUnique({ where: { id: primaryMailboxId } });
-      if (!inbox || inbox.status !== InboxStatus.active) continue;
+      if (!inbox || inbox.status === InboxStatus.paused) continue;
 
       try {
         await processCampaignPrimary(inbox);

apps/api/src/lib/inboxGuard.ts

@@ -1,6 +1,10 @@
 import type { Inbox } from '../lib/prisma';
 import { InboxStatus } from '../lib/prisma';
 import { prisma } from '../lib/prisma';
+import { logger } from './logger';
+
+/** Consecutive failed operations before marking a mailbox as error. */
+export const MAILBOX_FAILURE_THRESHOLD = 3;
 
 export async function withInboxGuard<T>(
   inbox: Inbox,
@@ -9,24 +13,49 @@ export async function withInboxGuard<T>(
   try {
     const result = await fn();
 
-    if (inbox.status === InboxStatus.error) {
     await prisma.inbox.update({
       where: { id: inbox.id },
-        data: { status: InboxStatus.active, lastError: null, errorAt: null },
+      data: {
-      });
+        consecutiveFailures: 0,
+        ...(inbox.status === InboxStatus.error
+          ? {
+              status: InboxStatus.active,
+              lastError: null,
+              errorAt: null,
             }
+          : {}),
+      },
+    });
 
     return result;
   } catch (err) {
     const message = err instanceof Error ? err.message : 'Unknown error';
-    await prisma.inbox.update({
+    const updated = await prisma.inbox.update({
       where: { id: inbox.id },
       data: {
-        status: InboxStatus.error,
+        consecutiveFailures: { increment: 1 },
         lastError: message,
         errorAt: new Date(),
       },
+      select: { consecutiveFailures: true },
     });
+
+    if (updated.consecutiveFailures >= MAILBOX_FAILURE_THRESHOLD) {
+      await prisma.inbox.update({
+        where: { id: inbox.id },
+        data: { status: InboxStatus.error },
+      });
+      logger.error(
+        { inboxId: inbox.id, email: inbox.email, consecutiveFailures: updated.consecutiveFailures, message },
+        'Mailbox marked error after consecutive failures',
+      );
+    } else {
+      logger.warn(
+        { inboxId: inbox.id, email: inbox.email, consecutiveFailures: updated.consecutiveFailures, message },
+        'Mailbox operation failed (still active)',
+      );
+    }
+
     throw err;
   }
 }

apps/api/src/lib/retry.test.ts

@@ -0,0 +1,53 @@
+import assert from 'node:assert/strict';
+import { describe, it } from 'node:test';
+import { isRetryableConnectionError, withRetry } from './retry';
+
+describe('retry', () => {
+  it('treats timeouts as retryable', () => {
+    assert.equal(isRetryableConnectionError(new Error('Connection timeout')), true);
+    assert.equal(isRetryableConnectionError(new Error('ETIMEDOUT')), true);
+  });
+
+  it('treats auth failures as non-retryable', () => {
+    assert.equal(isRetryableConnectionError(new Error('Invalid credentials')), false);
+    assert.equal(isRetryableConnectionError(new Error('Authentication failed')), false);
+  });
+
+  it('returns on first success', async () => {
+    let calls = 0;
+    const result = await withRetry(async () => {
+      calls += 1;
+      return 'ok';
+    });
+    assert.equal(result, 'ok');
+    assert.equal(calls, 1);
+  });
+
+  it('retries transient errors then succeeds', async () => {
+    let calls = 0;
+    const result = await withRetry(
+      async () => {
+        calls += 1;
+        if (calls === 1) {
+          throw new Error('ETIMEDOUT');
+        }
+        return 'ok';
+      },
+      { baseDelayMs: 1 },
+    );
+    assert.equal(result, 'ok');
+    assert.equal(calls, 2);
+  });
+
+  it('does not retry auth errors', async () => {
+    let calls = 0;
+    await assert.rejects(
+      withRetry(async () => {
+        calls += 1;
+        throw new Error('Invalid credentials');
+      }),
+      /Invalid credentials/,
+    );
+    assert.equal(calls, 1);
+  });
+});

apps/api/src/lib/retry.ts

@@ -0,0 +1,98 @@
+import { logger } from './logger';
+
+const DEFAULT_MAX_ATTEMPTS = 3;
+const DEFAULT_BASE_DELAY_MS = 1_000;
+
+const NON_RETRYABLE_PATTERNS = [
+  'invalid credentials',
+  'authentication failed',
+  'authenticationfailed',
+  'invalid login',
+  'username and password not accepted',
+  'oauth',
+  'not configured',
+  'validation failed',
+  'content validation',
+];
+
+const RETRYABLE_PATTERNS = [
+  'timeout',
+  'etimedout',
+  'econnreset',
+  'econnrefused',
+  'enotfound',
+  'socket',
+  'connection lost',
+  'connection closed',
+  'too many',
+  'rate limit',
+  'temporarily',
+  'try again',
+  'service unavailable',
+  'unavailable',
+  '503',
+  '421',
+  '454',
+  '4.7.0',
+  'system error',
+  'network',
+  'closed',
+  'broken pipe',
+  'eai_again',
+];
+
+function errorMessage(err: unknown): string {
+  return err instanceof Error ? err.message : String(err);
+}
+
+export function isRetryableConnectionError(err: unknown): boolean {
+  const message = errorMessage(err).toLowerCase();
+
+  if (NON_RETRYABLE_PATTERNS.some((pattern) => message.includes(pattern))) {
+    return false;
+  }
+
+  return RETRYABLE_PATTERNS.some((pattern) => message.includes(pattern));
+}
+
+function sleep(ms: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+export async function withRetry<T>(
+  fn: () => Promise<T>,
+  options?: {
+    maxAttempts?: number;
+    baseDelayMs?: number;
+    label?: string;
+  },
+): Promise<T> {
+  const maxAttempts = options?.maxAttempts ?? DEFAULT_MAX_ATTEMPTS;
+  const baseDelayMs = options?.baseDelayMs ?? DEFAULT_BASE_DELAY_MS;
+  const label = options?.label ?? 'operation';
+
+  let lastError: unknown;
+
+  for (let attempt = 1; attempt <= maxAttempts; attempt++) {
+    try {
+      return await fn();
+    } catch (err) {
+      lastError = err;
+      const retryable = isRetryableConnectionError(err);
+      const isLastAttempt = attempt === maxAttempts;
+
+      if (!retryable || isLastAttempt) {
+        throw err;
+      }
+
+      const delayMs = baseDelayMs * 2 ** (attempt - 1);
+      logger.warn(
+        { attempt, maxAttempts, delayMs, label, err: errorMessage(err) },
+        'Retrying after transient connection failure',
+      );
+      await sleep(delayMs);
+    }
+  }
+
+  throw lastError;
+}

apps/api/src/models/enums.ts

@@ -13,7 +13,7 @@ export const DEFAULT_INDUSTRIES = ['SaaS', 'Marketing', 'Finance', 'Childcare']
 
 export const DEFAULT_SETTINGS = {
   dispatcher_cron: '*/15 * * * *',
-  rescuer_cron: '*/10 * * * *',
+  rescuer_cron: '*/20 * * * *',
   ramp_increment: '2',
   industries: JSON.stringify(DEFAULT_INDUSTRIES),
 } as const;

apps/api/src/routes/inboxes.routes.ts

@@ -170,6 +170,7 @@ router.post('/', async (req: Request, res: Response, next: NextFunction) => {
       companyName: data.companyName ?? null,
       lastError: null,
       errorAt: null,
+      consecutiveFailures: 0,
       spamFolderPath: null,
       lastSpamRescuedAt: null,
       createdAt: new Date(),
@@ -300,7 +301,7 @@ router.patch('/:id', async (req: Request, res: Response, next: NextFunction) =>
         ...(password ? { password: encrypt(password) } : {}),
         ...(oauthRefreshToken ? { oauthRefreshToken: encrypt(oauthRefreshToken) } : {}),
         ...(rest.status === InboxStatus.active
-          ? { lastError: null, errorAt: null }
+          ? { lastError: null, errorAt: null, consecutiveFailures: 0 }
           : {}),
       },
     });
@@ -351,10 +352,15 @@ router.post('/:id/test', async (req: Request, res: Response, next: NextFunction)
           errorAt: new Date(),
         },
       });
-    } else if (inbox.status === InboxStatus.error) {
+    } else {
       await prisma.inbox.update({
         where: { id: inbox.id },
-        data: { status: InboxStatus.active, lastError: null, errorAt: null },
+        data: {
+          status: InboxStatus.active,
+          lastError: null,
+          errorAt: null,
+          consecutiveFailures: 0,
+        },
       });
     }
 

apps/api/src/services/email.service.ts

@@ -1,6 +1,7 @@
 import nodemailer, { Transporter } from 'nodemailer';
 import type { Inbox } from '../lib/prisma';
 import { MailboxAuthType } from '../lib/prisma';
+import { withRetry } from '../lib/retry';
 import { decrypt } from './crypto.service';
 import { EmailPayload } from '../models/types';
 import { resolveMailboxAccessToken } from './mailbox-auth.service';
@@ -58,9 +59,18 @@ export async function createSmtpTransport(inbox: Inbox): Promise<Transporter> {
 export async function testSmtp(
   inbox: Inbox,
 ): Promise<{ ok: boolean; error?: string }> {
+  try {
+    await withRetry(
+      async () => {
         const transporter = await createSmtpTransport(inbox);
         try {
           await transporter.verify();
+        } finally {
+          transporter.close();
+        }
+      },
+      { label: `smtp-test:${inbox.email}` },
+    );
     return { ok: true };
   } catch (err) {
     const message = err instanceof Error ? err.message : 'SMTP verification failed';
@@ -68,8 +78,6 @@ export async function testSmtp(
       ok: false,
       error: formatMicrosoftAuthError(message),
     };
-  } finally {
-    transporter.close();
   }
 }
 
@@ -77,6 +85,8 @@ export async function sendMail(
   inbox: Inbox,
   payload: EmailPayload,
 ): Promise<{ messageId: string }> {
+  return withRetry(
+    async () => {
       const transporter = await createSmtpTransport(inbox);
 
       try {
@@ -94,6 +104,9 @@ export async function sendMail(
       } finally {
         transporter.close();
       }
+    },
+    { label: `smtp-send:${inbox.email}` },
+  );
 }
 
 export async function testConnection(

apps/api/src/services/imap.service.ts

@@ -1,6 +1,7 @@
 import { ImapFlow } from 'imapflow';
 import type { Inbox } from '../lib/prisma';
 import { MailboxAuthType } from '../lib/prisma';
+import { withRetry } from '../lib/retry';
 import { decrypt } from './crypto.service';
 import { resolveMailboxAccessToken } from './mailbox-auth.service';
 import { formatMicrosoftAuthError } from './microsoft-oauth.service';
@@ -50,17 +51,13 @@ export async function createImapClient(inbox: Inbox): Promise<ImapFlow> {
 export async function testImap(
   inbox: Inbox,
 ): Promise<{ ok: boolean; error?: string }> {
+  try {
+    await withRetry(
+      async () => {
         const client = await createImapClient(inbox);
         try {
           await client.connect();
           await client.mailboxOpen('INBOX');
-    return { ok: true };
-  } catch (err) {
-    const message = err instanceof Error ? err.message : 'IMAP connection failed';
-    return {
-      ok: false,
-      error: formatMicrosoftAuthError(message),
-    };
         } finally {
           try {
             await client.logout();
@@ -68,12 +65,25 @@ export async function testImap(
             // ignore logout errors
           }
         }
+      },
+      { label: `imap-test:${inbox.email}` },
+    );
+    return { ok: true };
+  } catch (err) {
+    const message = err instanceof Error ? err.message : 'IMAP connection failed';
+    return {
+      ok: false,
+      error: formatMicrosoftAuthError(message),
+    };
+  }
 }
 
 export async function withImapClient<T>(
   inbox: Inbox,
   fn: (client: ImapFlow) => Promise<T>,
 ): Promise<T> {
+  return withRetry(
+    async () => {
       const client = await createImapClient(inbox);
       await client.connect();
       try {
@@ -85,4 +95,7 @@ export async function withImapClient<T>(
           // ignore logout errors
         }
       }
+    },
+    { label: `imap:${inbox.email}` },
+  );
 }

apps/api/src/services/job-queue.service.ts

@@ -73,6 +73,29 @@ export async function enqueueSendJob(
   return job.id;
 }
 
+const STALE_SEND_JOB_MS = 60 * 60 * 1000;
+
+export async function reclaimStaleSendJobs(staleMs = STALE_SEND_JOB_MS): Promise<number> {
+  const cutoff = new Date(Date.now() - staleMs);
+  const result = await prisma.sendJob.updateMany({
+    where: {
+      status: SendJobStatus.processing,
+      updatedAt: { lt: cutoff },
+    },
+    data: {
+      status: SendJobStatus.failed,
+      errorMessage: 'Stale processing job reclaimed',
+      processedAt: new Date(),
+    },
+  });
+
+  if (result.count > 0) {
+    logger.warn({ count: result.count }, 'Reclaimed stale send jobs stuck in processing');
+  }
+
+  return result.count;
+}
+
 export async function claimDueSendJob(campaignId: string) {
   const now = new Date();
   const job = await prisma.sendJob.findFirst({

apps/api/src/services/settings.service.ts

@@ -40,4 +40,17 @@ export async function seedDefaultSettings(): Promise<void> {
       update: {},
     });
   }
+
+  await migrateLegacyRescuerCron();
+}
+
+/** One-time bump for installs still on the old 10-minute rescuer interval. */
+async function migrateLegacyRescuerCron(): Promise<void> {
+  const row = await prisma.setting.findUnique({ where: { key: 'rescuer_cron' } });
+  if (row?.value === '*/10 * * * *') {
+    await prisma.setting.update({
+      where: { key: 'rescuer_cron' },
+      data: { value: DEFAULT_SETTINGS.rescuer_cron },
+    });
+  }
 }

prisma/migrations/20260703215915_mailbox_connection_resilience/migration.sql

@@ -0,0 +1,81 @@
+-- RedefineTables
+PRAGMA defer_foreign_keys=ON;
+PRAGMA foreign_keys=OFF;
+CREATE TABLE "new_Inbox" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "workspaceId" TEXT NOT NULL,
+    "email" TEXT NOT NULL,
+    "smtpHost" TEXT NOT NULL,
+    "smtpPort" INTEGER NOT NULL,
+    "imapHost" TEXT NOT NULL,
+    "imapPort" INTEGER NOT NULL,
+    "username" TEXT NOT NULL,
+    "password" TEXT NOT NULL,
+    "authType" TEXT NOT NULL DEFAULT 'password',
+    "oauthRefreshToken" TEXT,
+    "role" TEXT NOT NULL DEFAULT 'unassigned',
+    "provider" TEXT NOT NULL DEFAULT 'custom',
+    "status" TEXT NOT NULL DEFAULT 'active',
+    "dailyLimit" INTEGER NOT NULL DEFAULT 40,
+    "currentRamp" INTEGER NOT NULL DEFAULT 5,
+    "industry" TEXT NOT NULL DEFAULT 'SaaS',
+    "senderName" TEXT,
+    "companyName" TEXT,
+    "lastError" TEXT,
+    "errorAt" DATETIME,
+    "consecutiveFailures" INTEGER NOT NULL DEFAULT 0,
+    "spamFolderPath" TEXT,
+    "lastSpamRescuedAt" DATETIME,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL,
+    CONSTRAINT "Inbox_workspaceId_fkey" FOREIGN KEY ("workspaceId") REFERENCES "Workspace" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+INSERT INTO "new_Inbox" ("authType", "companyName", "createdAt", "currentRamp", "dailyLimit", "email", "errorAt", "id", "imapHost", "imapPort", "industry", "lastError", "lastSpamRescuedAt", "oauthRefreshToken", "password", "provider", "role", "senderName", "smtpHost", "smtpPort", "spamFolderPath", "status", "updatedAt", "username", "workspaceId") SELECT "authType", "companyName", "createdAt", "currentRamp", "dailyLimit", "email", "errorAt", "id", "imapHost", "imapPort", "industry", "lastError", "lastSpamRescuedAt", "oauthRefreshToken", "password", "provider", "role", "senderName", "smtpHost", "smtpPort", "spamFolderPath", "status", "updatedAt", "username", "workspaceId" FROM "Inbox";
+DROP TABLE "Inbox";
+ALTER TABLE "new_Inbox" RENAME TO "Inbox";
+CREATE INDEX "Inbox_status_idx" ON "Inbox"("status");
+CREATE INDEX "Inbox_workspaceId_role_idx" ON "Inbox"("workspaceId", "role");
+CREATE UNIQUE INDEX "Inbox_workspaceId_email_key" ON "Inbox"("workspaceId", "email");
+-- RedefineTables
+PRAGMA defer_foreign_keys=ON;
+PRAGMA foreign_keys=OFF;
+CREATE TABLE "new_Inbox" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "workspaceId" TEXT NOT NULL,
+    "email" TEXT NOT NULL,
+    "smtpHost" TEXT NOT NULL,
+    "smtpPort" INTEGER NOT NULL,
+    "imapHost" TEXT NOT NULL,
+    "imapPort" INTEGER NOT NULL,
+    "username" TEXT NOT NULL,
+    "password" TEXT NOT NULL,
+    "authType" TEXT NOT NULL DEFAULT 'password',
+    "oauthRefreshToken" TEXT,
+    "role" TEXT NOT NULL DEFAULT 'unassigned',
+    "provider" TEXT NOT NULL DEFAULT 'custom',
+    "status" TEXT NOT NULL DEFAULT 'active',
+    "dailyLimit" INTEGER NOT NULL DEFAULT 40,
+    "currentRamp" INTEGER NOT NULL DEFAULT 5,
+    "industry" TEXT NOT NULL DEFAULT 'SaaS',
+    "senderName" TEXT,
+    "companyName" TEXT,
+    "lastError" TEXT,
+    "errorAt" DATETIME,
+    "consecutiveFailures" INTEGER NOT NULL DEFAULT 0,
+    "spamFolderPath" TEXT,
+    "lastSpamRescuedAt" DATETIME,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" DATETIME NOT NULL,
+    CONSTRAINT "Inbox_workspaceId_fkey" FOREIGN KEY ("workspaceId") REFERENCES "Workspace" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+INSERT INTO "new_Inbox" ("authType", "companyName", "createdAt", "currentRamp", "dailyLimit", "email", "errorAt", "id", "imapHost", "imapPort", "industry", "lastError", "lastSpamRescuedAt", "oauthRefreshToken", "password", "provider", "role", "senderName", "smtpHost", "smtpPort", "spamFolderPath", "status", "updatedAt", "username", "workspaceId") SELECT "authType", "companyName", "createdAt", "currentRamp", "dailyLimit", "email", "errorAt", "id", "imapHost", "imapPort", "industry", "lastError", "lastSpamRescuedAt", "oauthRefreshToken", "password", "provider", "role", "senderName", "smtpHost", "smtpPort", "spamFolderPath", "status", "updatedAt", "username", "workspaceId" FROM "Inbox";
+DROP TABLE "Inbox";
+ALTER TABLE "new_Inbox" RENAME TO "Inbox";
+CREATE INDEX "Inbox_status_idx" ON "Inbox"("status");
+CREATE INDEX "Inbox_workspaceId_role_idx" ON "Inbox"("workspaceId", "role");
+CREATE UNIQUE INDEX "Inbox_workspaceId_email_key" ON "Inbox"("workspaceId", "email");
+PRAGMA foreign_keys=ON;
+PRAGMA defer_foreign_keys=OFF;
+
+-- Reduce IMAP polling frequency for existing installs still on the old default.
+UPDATE "Setting" SET "value" = '*/20 * * * *' WHERE "key" = 'rescuer_cron' AND "value" = '*/10 * * * *';

prisma/schema.prisma

@@ -121,6 +121,7 @@ model Inbox {
   companyName String?
   lastError            String?
   errorAt              DateTime?
+  consecutiveFailures  Int      @default(0)
   spamFolderPath    String?
   lastSpamRescuedAt DateTime?
   createdAt   DateTime        @default(now())