kitio.aiAdded Oct 29, 2026
Mails.ai
Freemium · $20/moEmail API that gives AI agents their own inboxes
What is Mails.ai?
Mails.ai is an email API for AI agents. A few lines of code give an agent a working address that can send, receive and reply, while you control who it can email and how much it can send.
It offers TypeScript and Python SDKs, a REST API and an MCP server, and lists integrations with Claude Code, Cursor, Windsurf, Cline, LangGraph and Pydantic AI. Inbound mail is scanned for prompt injection and webhooks are signed.
Pro and Scale let agents send from your own domain, with per-agent allowlists and send limits at higher tiers. Billing is self-serve through Stripe, and the free plan needs only a magic-link signup.
Features
- Inbox per agent through one API call
- TypeScript and Python SDKs
- MCP server
- Injection scan on inbound mail
- Send from your own domain
Tags
Releases
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Organization
Mails.ai
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Freemium
- Paid options from
- $20/mo
- Billing frequency
- Monthly
Mails.ai plans
Free
Free
- 3,000 emails per month
- 3,000 inbound replies per month
- 1 agent
Pro
$20/mo
- 50K emails per month
- 5 agents
- Send from your own domain
- Signed webhooks
Scale
$99/mo
- 250K emails per month
- Unlimited agents
- Per-agent allowlists and send limits
Prices in USD, checked Oct 29, 2026. Plans change often, so confirm on the Mails.ai site.Official pricing
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Pros and cons
Pros
- Free tier with no card
- Controls on who an agent can email
- Works with major coding agents
Cons
- Free plan allows just 1 agent
- Custom domains need Pro
- Dedicated IP is on request only
Prompts & results
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Reviews
Q&A
What is Mails.ai?
Mails.ai is an email API for AI agents. A few lines of code give an agent a working address that can send, receive and reply, while you control who it can email and how much it can send.
How much does Mails.ai cost?
Mails.ai is freemium, with paid plans from $20/mo.
Is there a free version of Mails.ai?
Yes. Mails.ai has a free plan, and paid plans add more usage and features.
What are the main features of Mails.ai?
Inbox per agent through one API call, TypeScript and Python SDKs, MCP server, Injection scan on inbound mail, Send from your own domain.
Who makes Mails.ai?
Mails.ai is made by Mails.ai.
What are the best alternatives to Mails.ai?
Popular alternatives include Visual Studio Code, Context7, TestSprite.