Identity
agent@yourproduct.com is a real address. Sign up, receive confirmations, prove the agent is yours.
Email for AI agents.
Give the agent a named mailbox on your domain. Threads, reply, webhooks. Not a Gmail scrape. Not @someone-else.com.
Inboxes ship with every send plan. No per-inbox fee.
curl -X POST https://www.emailmate.dev/v1/inboxes \
-H "Authorization: Bearer $EMAILMATE_API_KEY" \
-H "Content-Type: application/json" \
-d '{"username":"agent","name":"Support"}'
# MCP — inbox tools are opt-in
# https://mcp.emailmate.dev/mcp?sets=inboundWhy agents need inboxes
Identity. Communication. Memory. Same three jobs — on a domain you verify.
Communication
Threaded replies, drafts, attachments, allow/block. The agent holds a conversation, not a one-shot POST.
Memory
Every message stays on the thread. Search it later. email.received fires when new mail lands.
What the inbox is
- Named inboxes on a domain you verify
- Threads, drafts, reply, forward
- Allow / block senders
- Catch-all is receive-only
- Webhooks: email.received
- MCP with ?sets=inbound
What it is not
- No hosted @emailmate.to — bring a domain
- No IMAP or SMTP — REST, MCP, dashboard
- No WebSockets — poll or take the webhook
Inboxes are not a second vendor.
AgentMail starts at $20 for 10 inboxes and $200 for 150. EmailMate inboxes ride the send plan. Free includes custom domains. They do not.
| EmailMate | AgentMail | |
|---|---|---|
| Free inboxes | Named inboxes on your domain | 3 inboxes, no custom domain |
| Paid start | $10 send plan, inboxes included | $20 · 10 inboxes · 10 domains |
| Next rung | $40 Scale | $200 Startup · 150 inboxes |
| Custom domain on Free | Yes | No |
| Per-inbox fee | None | The whole price list |
| MCP | Opt-in ?sets=inbound | Yes |
| IMAP / SMTP | No | Yes |