Feat/110 email service module#121
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memplethee-lab merged 15 commits intoJul 24, 2026
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…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
…ue management, and multi-provider support (Issue SourceXXL#110)
- email-queue.service.ts: explicit Map generic type, refactor update calls with typed metadata object to avoid QueryDeepPartialEntity mismatch - email.service.spec.ts: add missing getPendingEmailCount to mock factory, use 'as any' cast for mock access on queueService - global-exception.filter.ts: remove broken SeverityLevel import from @sentry/core (removed in v10), inline string literal type instead
9 tasks
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Closes #110
Overview
Implements a comprehensive email service module that handles sending transactional and notification emails with template support, async queue-based delivery, multiple provider adapters, and delivery tracking.
Architecture
src/email/
├── dto/send-email.dto.ts # Validated DTOs (SendEmailDto, CreateTemplateDto, SendBulkEmailDto)
├── entities/email-log.entity.ts # TypeORM entity for delivery tracking
├── interfaces/email-provider.interface.ts # Provider contract
├── providers/
│ ├── smtp-email.provider.ts # SMTP via nodemailer (primary)
│ ├── sendgrid-email.provider.ts # SendGrid adapter (stub)
│ └── ses-email.provider.ts # AWS SES adapter (stub)
├── services/
│ ├── template-engine.service.ts # {{variable}} substitution with XSS escaping
│ ├── email-queue.service.ts # Bull queue with exponential backoff retry
│ └── email-processor.service.ts # Bull job processor
├── email.service.ts # Orchestrator (send, bulk, retry, unsubscribe)
├── email.controller.ts # REST endpoints with Swagger docs
├── email.module.ts # NestJS module wiring
└── email.service.spec.ts # Unit tests
Features Implemented
{{variable}}substitution and HTML-escaping (XSS protection)email_logstable: queued/sending/sent/failed/bounced)