Email APIs

Developer-focused coverage of transactional and marketing email APIs — Mailgun, SendGrid, Postmark and Amazon SES. Integration guides, deliverability considerations, pricing, and how to choose the right API for your stack.

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Email API vs SMTP: Which Should You Use? (2026)

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Email API vs SMTP relay — which should you use? Use an email API (HTTP requests, webhooks, templating, event analytics) when you are writing application code and want speed and control. Use an SMTP relay when you are connecting an existing platform, plugin or tool that just expects SMTP credentials — the universal path of … Read more