Migrate

Move your email API to Mails.ai.

~30 minutes from your current provider. Same SMTP shape on the send side; typed reply events on the inbound side. Self-serve checkout, magic-link signup, no sales call. The Free tier (3,000 events/mo) covers the dual-running phase.

Migration guides

Pick your current provider.

From Resend

Migrate from Resend

You like the developer experience. You want typed reply events and per-agent reputation. ~30 minutes of changes.

Read guide →
From SendGrid

Migrate from SendGrid

SendGrid killed the free tier in May 2025. We launched the developer-first alternative. Same SMTP shape, agent-native features.

Read guide →
From Postmark

Migrate from Postmark

You love Postmark's reputation discipline. We use the same approach (per-sender complaint cron, auto-suspend at 0.3%) plus typed reply events.

Read guide →
From Mailgun

Migrate from Mailgun

Mailgun's webhooks deliver raw bodies. Mails.ai delivers structured reply events with intent + entities + injection score. Same volume, less parsing code.

Read guide →
Why migrate

What you gain by moving.

  • Typed reply events. Stop regexing raw inbound bodies. Every inbound arrives with intent, entities, urgency, injection_score, and sender_reputation pre-computed.
  • Native prompt-injection scanning. Every inbound runs a six-category injection scanner before reaching your agent. No third-party tool, no DIY guardrails.
  • MCP-native distribution. npx @mailsai/mcp-server drops into Claude Code, Cursor, Cline, or any MCP-compatible runtime — your agent gets mails.send /mails.onReply tools automatically.
  • Self-serve at any volume. No Enterprise gate. No contact-sales tier. No sales team to call. The pricing page is the price — and the Metered tier (coming soon) extends it to $0.001/send + $0.002/inbound (+$0.003 opt-in classify) at whatever volume you slide to.
  • Lean cost structure. Commodity infrastructure plus a small team means metered pricing economics that 100-employee competitors can't match.
Closed beta

Built for agents.
Self-serve at every volume.

Public API opens Q3 2026. Drop ~6 lines into your agent and ship.

npmpnpmbunpip
$ npm install @mailsai/sdk
Packages publish with cohort 1 · Q3 2026
Reserve your seatRead the docs