AgentMail
Dedicated programmable email inboxes, threads, webhooks, and MCP server built specifically for AI agents.
Programmable email inbox provider purpose-built for AI agents. Provisions dedicated agent email addresses on the fly with structured inbound/outbound threading, attachment parsing, webhooks, WebSockets, and an official MCP server.
Lock-in risk: higher = more lock-in (worse). Overall already inverts this dimension.
Top purpose-built runner-up for agent-email-inbox when agents need dedicated per-agent mailboxes, thread state, and WebSocket/MCP events out of the box.
Strengths
- · Purpose-built agent inbox API: create inboxes on the fly with native thread/reply context
- · Includes Free tier (3 inboxes, 3k emails/mo) plus official SDKs (`agentmail`) and MCP server (`agentmail-mcp`)
- · Real-time WebSockets and signed webhooks for low-latency inbound agent loops
Weaknesses
- · Younger deliverability footprint than Postmark or Amazon SES for massive bulk outbound
- · Free tier appends 'Sent via AgentMail' footer and does not include custom domains
- · SOC 2 report requires Startup tier ($200/mo)
Pricing notes
As of 2026-10-28 (agentmail.to/pricing): Free $0/mo (3 inboxes, 3,000 emails/mo, 100 emails/day, 3 GB storage, no card required). Developer $20/mo (10 inboxes, 10,000 emails/mo, 10 custom domains). Startup $200/mo (150 inboxes, 15,000 emails/day, SOC 2). Add-ons: $2/mo per extra inbox, $2/mo per 1,000 extra monthly sends.
Sourced pricing
Contract status unit_mismatch · unit_mismatch. Single normalized $/1M: null. Machine list: /api/pricing?provider=agentmail
- AgentMail Developer Plan ($20/mo for 10 inboxes & 10,000 emails; $2/1k extra emails) · usd_per_1k_emails · $2 · unit_mismatch · normalized null
- AgentMail Additional Inbox ($2.00 / inbox / month) · usd_per_additional_inbox_month · $2 · unit_mismatch · normalized null
Community signals
Insight claims only — never mutate official scores. Outside reports: 0; seed examples: 0.
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