Strongest fit
Who it is built for
- Developers building email-capable AI agents
- Teams automating transactional email workflows
- Agent products that need structured inbound replies
Mails.ai
Email API and infrastructure for AI agents
Mails.ai provides programmatic email infrastructure for AI agents. Developers can give agents email addresses, send messages, receive structured reply events, scan inbound mail for prompt injection, and use REST, TypeScript, or MCP integrations to build agent email workflows.
MAMails.aiProduct screenshot pending
- Best for
- Developers building email-capable AI agents
- Pricing signal
- Free
- Primary category
- Developer tools
- Last verified
- Jul 31, 2026
The decision
Should Mails.ai make your shortlist?
Start with the job, the team, and the constraints. Product fit becomes much clearer when those three line up.
Practical use cases
Jobs it can take on
- Send transactional emails from named agents
- Route inbound replies through structured webhook events
- Screen inbound email for prompt-injection attempts
Before you choose
Know the tradeoffs
- The service is in a closed-beta and phased launch period.
- Metered per-event billing is marked as coming soon.
- Custom domains require a paid plan and DNS verification.
Inside the product
What you can actually do with it.
The core product capabilities, grouped around the work they enable.
Structured reply events
Inbound emails are delivered as structured events with injection scores and sender-reputation data.
Injection scanning
Mails.ai scans every inbound message for prompt injection and can quarantine high-confidence attacks.
SDK and MCP access
The API supports REST, a TypeScript SDK, and an MCP server for connecting agent runtimes to email workflows.
Typical workflow
Create an API key and configure a named email agent in a workspace. Send messages through the API, then process structured reply events through webhooks, the SDK, or MCP while using the provided security and reputation signals.
Plans and official links
Plans and accessFree.
See the entry price, free access options, company details, and direct vendor destinations in one place.
Starting pointFree
Free plan
See plans- Provider
- XAscend LLC
Official destinations
Choosing for a real workflow?
Make the tool work with the rest of your operation.
We map the workflow, connect existing systems, choose what to buy, and build what is missing.