Agent Free
Try agent mailboxes before committing
$0 forever
No credit card required
- 3 inboxes
- 3,000 emails per month
- 100 emails per day
AGENT MAIL
Email inboxes for your agents
Create an inbox with one request. Get every reply pushed to a webhook. Answer in the same thread. Free for 3 inboxes and 100 messages a day - no card.
For agents: https://app.ackuna.com/llms.txt
FOUR REQUESTS
From nothing to a threaded reply
The whole integration, end to end. Each call is one request against the v1 API.
Sign up over the API
No console, no human. Ackuna mails an 8-character code to the address; POST it back to /v1/signup/verify with the returned signup_id and you get the organization and your first key.
curl -X POST https://app.ackuna.com/api/v1/signup \ -H "Content-Type: application/json" \ -d '{"email": "[email protected]", "organization_name": "Robot Co"}'Create an inbox
Omit domain and the inbox is hosted on the shared platform domain, so it can receive mail immediately. Pass a domain you control to host it there instead.
curl -X POST https://app.ackuna.com/api/v1/inboxes \ -H "Authorization: Bearer ak_..." \ -H "Content-Type: application/json" \ -H "Idempotency-Key: create-support-inbox-1" \ -d '{"username": "support"}'Register a webhook
Every message that lands in one of your inboxes is pushed to your endpoint as an inbox.message.received event, signed so you can verify it came from us.
curl -X POST https://app.ackuna.com/api/v1/webhook-endpoints \ -H "Authorization: Bearer ak_..." \ -H "Content-Type: application/json" \ -H "Idempotency-Key: register-agent-webhook-1" \ -d '{"url": "https://agent.example.com/webhooks/ackuna", "event_types": ["inbox.message.received"]}'Reply in the thread
reply_to_message_id is enough - the recipients, the subject and the threading headers are all inferred from the message you are answering.
curl -X POST https://app.ackuna.com/api/v1/inboxes/inb_01k2n9v8qf3m7d5b0y6xz4rt3e/messages \ -H "Authorization: Bearer ak_..." \ -H "Content-Type: application/json" \ -H "Idempotency-Key: reply-to-msg-1" \ -d '{"reply_to_message_id": "msg_01k2n9v8qf3m7d5b0y6xz4rt5g", "text_body": "Thanks for reaching out."}'
PRICING
Simple, predictable Agent Mail pricing
Every plan includes deliverability tooling and dedicated inboxes for your agents. Upgrade when your volume does.
Two months free on every yearly plan.
Agent Builder
For a small team building automated workflows
$19 / month
Billed monthly, cancel anytime
- 25 inboxes
- 10,000 emails per month
- 2,000 emails per day
Agent Scale
For growing teams running many mailboxes
$59 / month
Billed monthly, cancel anytime
- 100 inboxes
- 50,000 emails per month
- 10,000 emails per day
Agent Startup
For startups running mailboxes at high volume
$149 / month
Billed monthly, cancel anytime
- 500 inboxes
- 250,000 emails per month
- 50,000 emails per day
Compare every plan
| Plan | Agent Free $0 forever | Agent Builder $19 / month | Agent Scale $59 / month | Agent Startup $149 / month |
|---|---|---|---|---|
| Inboxes | 3 | 25 | 100 | 500 |
| Emails per month | 3,000 | 10,000 | 50,000 | 250,000 |
| Emails per day | 100 | 2,000 | 10,000 | 50,000 |
FAQ