Inbox Management

Every AI agent gets its own email address. Create [email protected] with a single POST request and start sending and receiving email immediately.

How it works

# Create an inbox
curl -X POST https://api.emails4agents.com/v1/inboxes \
  -H "X-API-Key: e4a_..." \
  -d '{"username": "agent", "domain_id": "...", "display_name": "My Agent"}'

# Returns: {"id": "...", "address": "[email protected]", ...}

No IMAP configuration. No webmail setup. No manual DNS changes per inbox. The inbox is live instantly and ready to send and receive.

Key capabilities

• Instant provisioning — Inboxes are live immediately after creation, no propagation delay
• Username + domain model — Combine any username with any verified domain you own
• Display names — Set a human-readable From: name for each inbox
• Bulk creation — Create hundreds of inboxes in a loop — no per-inbox pricing
• Soft delete — Deactivate inboxes without losing message history
• Domain scoping — Scope API keys to specific domains for multi-tenant architectures

Use cases

• Agent identity — Each AI agent gets a persistent email identity across sessions
• Customer simulation — Create test inboxes for QA workflows
• Multi-tenant apps — Provision inboxes per customer at signup
• Campaign automation — Route different campaigns through different addresses

vs AgentMail

AgentMail limits you to 25 inboxes on their $20/mo plan. With Emails4Agents, you create as many inboxes as your domain supports — and since it’s self-hosted, there’s no per-inbox charge. A $7/mo VPS handles hundreds of active inboxes with room to spare.