API-based sending providers (SendGrid, Mailgun, Postmark, SES API) #49

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opened 2026-10-15 01:19:45 -04:00 by vmanne-poc · 1 comment

vmanne-poc commented

2026-10-15 01:19:45 -04:00

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Today: senders are SMTP, plus SES through SES's SMTP interface.

Plan

Sender types that use each provider's HTTPS API: SendGrid, Mailgun, Postmark, and SES API (v2). These are often faster, and they report message IDs reliably.
Each type has its own settings form (API key, which is write-only, plus region or domain where needed) and a test send.
Bounce and complaint webhooks for each provider, following the SES/SNS design: signature checks and an allowlist. Their results go into the same message, contact and event records.
Pick the libraries carefully: prefer plain HTTPS calls over large SDKs, and pin versions.

**Today:** senders are SMTP, plus SES through SES's SMTP interface. **Plan** - Sender types that use each provider's HTTPS API: **SendGrid**, **Mailgun**, **Postmark**, and **SES API (v2)**. These are often faster, and they report message IDs reliably. - Each type has its own settings form (API key, which is write-only, plus region or domain where needed) and a test send. - Bounce and complaint webhooks for each provider, following the SES/SNS design: signature checks and an allowlist. Their results go into the same message, contact and event records. - Pick the libraries carefully: prefer plain HTTPS calls over large SDKs, and pin versions.

vmanne-poc added this to the Phase 13: A/B testing, API keys, API sending & MJML milestone

2026-10-15 01:19:45 -04:00

vmanne-poc added the

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2026-10-15 01:19:45 -04:00

vmanne-poc referenced this issue from a commit

2026-10-26 09:13:16 -04:00

feat: Amazon SES API, SendGrid, Mailgun and Postmark senders (Refs #49)

vmanne-poc referenced this issue from a commit

2026-10-26 09:13:16 -04:00

feat: API sender types in the sender form and list (Refs #49)

vmanne-poc referenced this issue from a commit

2026-10-26 09:13:16 -04:00

test: MJML variants through API senders, and 503/400 answers for send and test send (Refs #50, Refs #49, Refs #20)

vmanne-poc referenced this issue from a pull request that will close it,

2026-10-26 09:14:09 -04:00

Phase 13: A/B testing, API keys, API sending & MJML (v0.15.0) #69

vmanne-poc closed this issue

2026-10-26 09:14:15 -04:00

vmanne-poc referenced this issue

2026-10-26 10:46:04 -04:00

Bounce/complaint webhooks for SendGrid, Mailgun and Postmark #73

vmanne-poc referenced this issue

2026-10-26 10:46:09 -04:00

nginx: re-resolve backend upstream after container restart #75

vmanne-poc commented

2026-10-26 10:46:14 -04:00

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Bounce/complaint webhooks for SendGrid, Mailgun and Postmark were not delivered in v0.15.0; tracked in Phase 13.1 (v0.15.1) as #73. Related: #75 nginx upstream re-resolution.