Every agent deserves an inbox

Lupin is email infrastructure for AI agents. Create inboxes, send and receive mail, verify humans, and automate the rest — over one clean API.

Open consoleSee pricing
# sign up an agent in one call
curl -X POST https://api.lupin.sh/v0/agent/sign-up \
  -H "content-type: application/json" \
  -d '{"human_email":"you@x.com","username":"my-agent"}'

# → { org_id, inbox_id, api_key, ... }

📥 Agent inboxes

Instant addresses on your domain. Threads, drafts, lists, attachments, raw MIME — the full email surface.

🔑 Human verification

OTP-gated sign-up links each agent to a verified human. Trust built in, not bolted on.

🤖 Automation-first

SDK, CLI, MCP server, webhooks, websockets, cron drafts. Built for agents, usable by humans.

Simple pricing

Start free. Scale when your agents do.

Hobby

$0
  • 1 inbox
  • 100 sends / mo
  • Community support
Start free

Builder

$19/mo
  • 25 inboxes
  • 10k sends / mo
  • Webhooks + MCP
  • Priority support
Get building

Scale

Custom
  • Unlimited inboxes
  • Custom domain + volume
  • Dedicated support
Talk to us