Email infrastructure · replacement recipe

Application-specific agent inbox wrapper

Replaces AgentMail. 3 ways out. Best: AgentMail (free tier) (cheaper plan), about $228 saved in year one.

Modeled, not measured. Savings use public prices and planning assumptions: the bill you stop paying, minus the new tool, your upkeep time and your setup time at $50/hour, over the first 12 months. No verified migrations yet. Check the must-haves in each recipe before you switch.

What you use

  • Logical inboxes
  • Send
  • Receive
  • Threads
  • Custom-domain routing

Not covered

  • Mail-server operation
  • Reputation parity
  • Provider abuse handling
  • Full deliverability platform
  • SOC 2 parity

Check before switching

  • Volume and domain limits modeled
  • Domain control verified
  • Bounce/suppression handling
  • Isolation and webhook security
  • Existing cheaper tier checked

Agents: get_recipe("agent-mail-wrapper") on the Stackcut MCP server.

3 ways out, best first

Cheaper planAgentMail (free tier)Saves $228 in year one
$20/mo today → $0/mo · setup 0.25 h · then $240/yr · payback 0.6 mo
1 seat. If your use fits the free tier (3 inboxes, 3,000 emails/mo, 3 GB storage).
Covers 100% of the core features
Free: 3 inboxes and 3,000 emails/mo; Developer $20 only for more inboxes/domains.
Sources: agentmail.to
Switch vendorResend (free tier)Saves $190 in year one
$20/mo today → $0/mo · setup 1 h · then $240/yr · payback 2.5 mo
1 seat. If your use fits the free tier (3,000 emails/mo).
Covers 67% of the core features (not: Create inboxes via API)
Resend Free sends 3,000 emails/mo and supports inbound; you build inbox/thread logic yourself.
Sources: agentmail.toresend.com
Replace with AIReplace with AI: application-specific agent inbox wrapperSavings not modeled yet
Retain an email infrastructure provider; implement app-specific inbox state and routing only. Compare AgentMail downgrade/add-ons first.

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