Planned — not live billing

Same free volume as AgentMail. Custom domains are not a paid add-on.

AgentMail publishes Free at $0 with 3 inboxes, 3,000 emails/month, 100 emails/day, and no custom domains; paid is Developer $20, Startup $200, Enterprise custom (agentmail.to/pricing, retrieved Sep 2026). Cooper is not charging yet. We match the 3,000 free emails and put the domain path on Free.

Start here

Free

$0

Planned — matches the category free tier, then adds domains

  • ▸3,000 emails / month
  • ▸3 inboxes · no daily 100 cap planned
  • ▸Custom domains on free (AgentMail free: none)
  • ▸@cooperemail.com instantly; BYO domain via DNS wizard
  • ▸Account-wide search; HTML + file attachments stored
  • ▸Webhooks, MCP tool schemas, inbound simulator
Start with the APIDNS wizard

Later

Pro

TBD

Not finalized — market is $20 Developer / $200 Startup

  • ▸Higher volume than 3,000 / mo
  • ▸More inboxes, domains, and retention
  • ▸Attachment search + historical backfill included
  • ▸Analytics beyond the /app stub
  • ▸Priority support via ops@avatar33.com
Start with the APIDNS wizard

Free tier, side by side

Cooper numbers are planned. AgentMail numbers are their public price list, not a screenshot of a private account.

AgentMail FreeCooper Free (planned)
Price$0$0 (planned, no card)
Inboxes33
Emails / month3,0003,000
Emails / day100No separate 100/day cap planned
Custom domainsNone on FreeOn Free — DNS wizard
SearchPer-product APIsAccount-wide FTS; files stored; attachment-text next
Agent onboardConsole + keyOne curl: key + inbox

Paid context: AgentMail Developer $20/mo (10 inboxes, 10,000 emails, 10 custom domains) and Startup $200/mo (150 inboxes, 150 domains). Cooper Pro / Enterprise remain TBD — talk to ops@avatar33.com. Nothing here processes a card.

Agents ask

FAQ

Honest answers for Claude Code and other agents comparing Cooper to AgentMail, Resend inbound, and the Gmail API.