Agent Inboxes

Categories / agent-inbox

Agent inbox for AI agents

This category lists 14 live-checked agent inbox products so AI agents can own a persistent email inbox — send, receive, thread, mailbox APIs, and often MCP/CLI. Current entries include AgentMail, Botmail, CarlyEmail, Dead Simple Email, and 10 more. 14/14 passed the latest link check. Common tags in this set: mcp, custom-domain, sdk, cli, imap. Use this hub when you need an agent inbox, an email inbox for AI agents, or a mailbox API — not bare transactional send and not a human shared inbox.

14 entries · data 2026-11-06T12:47:17Z

AgentMail

Email inbox API built for AI agents: programmatic inboxes, threads, webhooks, IMAP/SMTP, custom domains, Python and TypeScript SDKs, MCP server.

agent-inboxdeveloper-or-agentmcpsdkimapsmtpcustom-domain
Free: 3 inboxes / 3k emails; Developer $20/mo live · 200 · 174ms

Botmail

Agent claims name@botmail.pro via CLI/MCP; human clicks one approval link. Threads, search, drafts, webhooks, wait_for_mail. No custom domains.

agent-inboxagent-claimmcpclirestdraft-review
Free: 1 mailbox; Paid from $5/mo live · 200 · 403ms

CarlyEmail

Inbox API shaped like AgentMail: create mailboxes from code, threaded replies, signed webhooks/WebSockets, per-tenant pods.

agent-inboxdeveloperwebhooksthreadspods
See site live · 200 · 100ms

Dead Simple Email

Email infrastructure for AI agents with API, IMAP/SMTP, webhooks, MCP. Agents can also buy an inbox pay-per-request with a wallet/card.

agent-inboxdevelopermcpclisdkimapsmtp
Free: 5 inboxes / 5k mo; Paid from $5/mo live · 200 · 58ms

Email for Agents

Remote MCP inbox with an approval queue so a human can check mail before it goes out.

agent-inboxdevelopermcprestapproval-queue
Free: 1 inbox / 100 units; ~$19 proposed live · 200 · 342ms

InboxAPI

Personal email address for AI agents via MCP-compatible CLI. Agent sends, receives, searches, replies, and forwards through tool calls.

agent-inboxagent-claimmcpcli
Free (trial limits); paid TBD live · 200 · 258ms

Lumbox

Agent inbox plus OTP extraction, credential vault, and login automation for agents that must complete signups.

agent-inboxdeveloperotpvaultlogin-automation
See site live · 200 · 97ms

Mails.ai

Agent email with MCP and TypeScript/Python SDKs. Magic-link signup; first send creates the agent; custom domains on paid plans.

agent-inboxdevelopermcpsdkcustom-domain
Free: 1 agent / 3k; Paid from $20/mo live · 200 · 165ms

Mailtrap Agent Inbox

Email testing platform that also offers agent inbox + local MCP (npx mcp-mailtrap), webhooks, and custom domains.

agent-inboxdevelopermcpsdkcustom-domainwebhooks
Free tier + paid from $15/mo live · 200 · 65ms

Nylas Agent Accounts

Hosted agent mailboxes from Nylas with CLI, MCP, SDKs, IMAP/SMTP, and calendar. Custom domains from $15/mo.

agent-inboxdevelopermcpclisdkimapsmtp
Free trial 3 accounts; Paid from $15/mo live · 200 · 77ms

OpenMail

Email API for AI agents with hosted MCP. Create inboxes, read, reply, and send from Claude Code or any MCP client.

agent-inboxdevelopermcpclicustom-domain
Free: 3 inboxes; Pro from €9/mo live · 200 · 321ms

Reloop

Open-source agent inbox platform plus transactional mail and campaigns. Self-host or use hosted; IMAP-capable.

agent-inboxdeveloperopen-sourceimaptransactional
OSS self-host; hosted plans available live · 200 · 644ms

Resend Inboxes

Transactional email platform adding agent inboxes with threads. Domain required; MCP and skills support.

agent-inboxdevelopermcpskillscustom-domainthreads
Inboxes in private beta; sending free/Pro tiers live · 200 · 147ms

Robotomail

Agent follows robotomail.com/skill to claim a mailbox; owner verifies email. MCP, CLI, multiple SDKs; custom domains on paid plans.

agent-inboxagent-claimmcpclisdkcustom-domain
Free limited; Paid from $19/mo live · 200 · 475ms

← Full directory · Mailbox vs webhook