Guides

4 posts on guides for AI agents that send and receive email.

30 July 2026 · 4 min read

A Resend alternative that also runs your lifecycle email

Resend has audiences, broadcasts and automations now. Here is what emails.sh does differently, where Resend is still ahead, and what a migration actually costs.

21 July 2026 · 3 min read

How to send email from Claude Code

Give Claude Code everything it needs to add transactional email to your app in one pass: the key, the endpoint, the prompt, and the checks that catch a wrong integration.

17 July 2026 · 3 min read

How to send email from Cursor

Add transactional email to a Cursor project without the SMTP detour: a rules file, the prompt to use, and how to review what the agent wrote before you ship it.

10 July 2026 · 5 min read

Resend alternatives, compared honestly

What Resend is genuinely good at, when it stops fitting, and how Postmark, SendGrid, Mailgun, SES, Brevo and emails.sh actually differ once you migrate.