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AgentMail

Dedicated programmable email inboxes, threads, webhooks, and MCP server built specifically for AI agents.

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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.

Overall
8.6
curated_estimate±0.35–0.5 band
confidence: high · editorial judgment as of 2026-10-28
Capability fit
9.1
Price / performance
8.6
Latency / reliability
8.5
Developer & agent DX
9.2
Privacy / data retention
8.0
Lock-in risk (higher = worse)
3.5
Maturity / track record
7.6

Lock-in risk: higher = more lock-in (worse). Overall already inverts this dimension.

Sources: AgentMail pricing: https://agentmail.to/pricing · AgentMail docs: https://docs.agentmail.to

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.

Regions: global, us, euLast reviewed: 2026-10-28Status: active

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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