Send email, buy dedicated inboxes, manage custom subdomains, and retrieve inbound messages through per-request email APIs. Supports shared relay sending, subdomain sender identities, forwarding inboxes, message storage, and attachment access.
Use for sending outbound emails, creating receiving inboxes, reading inbound messages, managing custom email subdomains, agent email workflows, forwarding inboxes, reply handling, verification messages, customer outreach, and per-message email delivery.
| Method | Path |
|---|---|
| POST | api/inbox/buy Buy an inbox on stableemail.dev ($1, 30 days) |
| POST | api/inbox/messages List messages in your inbox ($0.001) |
| POST | api/inbox/messages/read Read a single inbox message ($0.001) |
| POST | api/inbox/send Send email from your forwarding inbox on stableemail.dev |
| POST | api/inbox/topup Top up a forwarding inbox for 30 days ($1) |
| POST | api/inbox/topup/quarter Top up a forwarding inbox for 90 days ($2.50, save 17%) |
| POST | api/inbox/topup/year Top up a forwarding inbox for 365 days ($8, save 34%) |
| POST | api/send Send an email from "StableEmail" <relay@stableemail.dev> |
| POST | api/subdomain/buy Purchase a custom email subdomain on stableemail.dev ($5) |
| POST | api/subdomain/inbox/create Create an inbox on your subdomain ($0.25) |
| POST | api/subdomain/inbox/messages List messages in a subdomain inbox ($0.001) |
| POST | api/subdomain/inbox/messages/read Read a single subdomain inbox message ($0.001) |
| POST | api/subdomain/send Send email from your custom subdomain on stableemail.dev |