Mailgun: pricing, API and MCP for AI agents
by Mailgun (Sinch) · www.mailgun.com
Checked 2026-10-17 on Mailgun (Sinch)'s own pages. Anything we could not confirm says “not verified”.
What is Mailgun? Email API and SMTP relay with tracking, webhooks, inbound routes and email validation. A free daily allowance, then plans from $15/month.
How an agent uses it: An official MCP server (Apache-2.0) exposes Mailgun's API with read and update tools only; it has no delete operations.
Best for: Senders who want a permanent free tier for testing and published volume rates down to $0.40 per 1,000.
Pricing
- Free tier
- Free: 100 emails/day, 1 custom sending domain [source, checked 2026-10-17]
- Entry paid price
- Basic from $15/month: 10,000 emails ($1.80 per extra 1,000); Foundation $35/month: 50,000; Scale $90/month: 100,000 [source, checked 2026-10-17]
- What you pay for (meter)
- Emails per month; extra messages per 1,000, tiered by plan [source]
- Data retention
- Logs: 1 day on Free and Basic, 5 days on Foundation, 30 days on Scale [source]
For agents
Compare
Other email tools: Resend · Postmark · Twilio SendGrid · AgentMail
Vendors: want a labelled featured slot on AI agent tool pages like this one? Sponsorships are always marked “Sponsored” and never change table order, verdicts or facts. See placements and how to book.