Simple, usage-based pricing
Start free, scale when you do. Every plan includes the full API, signed webhooks, and mailbox backfill.
Preview pricing — free for everyone while in beta
Developer
$0/mo
For building and testing.
Start free- 1 organization
- Up to 5 connected mailboxes
- Full API: grants, messages, send
- Signed webhooks + full-mailbox backfill
- Community support
Growth
Popular$49/mo
For production apps.
Start free- Unlimited organizations
- Up to 100 connected mailboxes
- Higher rate limits
- Grant-lifecycle webhooks
- Email support · 99.9% uptime
Scale
Custom
For high volume.
Contact us- Unlimited mailboxes
- Custom rate limits + SLA
- SSO & audit logs
- Dedicated support
- White-glove onboarding
Questions
- What counts as a connected mailbox?
- Each Gmail account a user authorizes through your branded connect link is one mailbox, for as long as it stays connected.
- Do webhooks or API calls cost extra?
- No. Signed webhooks, the Read/Send API, and full-mailbox backfill are included on every plan.
- What happens at the rate limit?
- Requests over the limit get a 429. Higher limits come with Growth and Scale.
- Can I self-host?
- courier-owl runs on your own AWS account end-to-end. Talk to us about a managed-in-your-cloud setup.