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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An email API lets your application send email programmatically — receipts, password resets, notifications and bulk messages — with far more control than plain SMTP offers. But should you use an email API or SMTP, and which provider is right? This guide explains what an email API is, how an email API compares to SMTP, … Read more