What is Robotomail used for?

Robotomail is an email service for AI agents: each agent gets its own mailbox to send, receive and reply through an API, MCP or CLI, with replies delivered as events. It is a good fit for giving a support agent its own inbox and letting agents qualify leads by email.

Yes. Robotomail has a free plan, and paid plans start at $19 per month.

Is Robotomail open source?

No. Robotomail is proprietary (closed-source) software and can't be self-hosted. In the Email Clients & Servers category, open-source options include RustMailer, docker-mailserver and Mail-in-a-Box.

What are some alternatives to Robotomail?

Robotomail competes with AgentInbox, AgentTeamEmail and Resend.

Robotomail: features, pricing and alternatives

About Robotomail

Robotomail gives an AI agent its own email address. The agent creates a mailbox with one call, emails people, receives their replies as message.received events and answers within the same conversation, with messages kept as threads. Developers choose how the agent connects: MCP for agents they already run, a REST API for building email into an app, or a command line for scripts.

Listed integrations include Claude Code, Codex, Cursor, Grok Bot, OpenClaw, Hermes and Muse, along with SDKs and a plain-text agent skill. Use cases named are customer support with hand-off, lead qualification, SaaS onboarding for stuck users and multi-agent workflows with one mailbox per role. Inbound email arrives as webhooks and events. The free tier covers 10 sends a month, limited to your own address, with no card, and Starter is listed at $19 a month, shown at half price in a limited offer, with a 30-day money-back guarantee.

Key features

Mailbox creation with a single API call
Send, receive and reply to email
Threaded email conversations
Inbound replies as webhooks and events
MCP server, REST API and CLI
SDKs and a plain-text agent skill
Integrations with Claude Code, Codex and Cursor

Good fit for

Giving a support agent its own inbox
Letting agents qualify leads by email

Tags: email; ai-agents; api; mcp; webhooks; inbox; developer-tools

Robotomail: questions and answers

What is Robotomail used for?: Robotomail is an email service for AI agents: each agent gets its own mailbox to send, receive and reply through an API, MCP or CLI, with replies delivered as events. It is a good fit for giving a support agent its own inbox and letting agents qualify leads by email.
Is Robotomail free?: Yes. Robotomail has a free plan, and paid plans start at $19 per month.
Is Robotomail open source?: No. Robotomail is proprietary (closed-source) software and can't be self-hosted. In the Email Clients & Servers category, open-source options include RustMailer, docker-mailserver and Mail-in-a-Box.
What are some alternatives to Robotomail?: Robotomail competes with AgentInbox, AgentTeamEmail and Resend.