Mail.cx vs Throwaway
Mail.cx
mail.cxThrowaway
throwaway.ioSide by side
| Figure | Mail.cx | Throwaway |
|---|---|---|
| Price from | $0.82/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Plans published | 4 | 1 |
| Spec score · Temporary email services | 9.1 (#4) | 7.4 (#32) |
| Spec score · Temporary Email Services | 8.9 (#6) | 7.1 (#30) |
| API | The REST API supports long-polling inboxes, retrieving parsed or raw email, downloading attachments, and server-sent event delivery. | The public REST API requires no authentication and is rate-limited to 300 requests per IP address per rolling 7-day window. |
Plans
In their own words
Mail.cx
Mail.cx provides short-lived inboxes for developers, QA teams, and product teams checking account verification, transactional messages, notification pipelines, or application integrations. It only receives email; it does not send it. A web inbox can be opened without signup by choosing a username or generating one, and server-sent events can push arriving mail to the browser. Its REST API supports long-polling, retrieval of parsed or raw email, attachment downloads, and event delivery. API use is limited to 10 requests per second per token; long-polling allows one concurrent wait per token and 10 per address. Free messages are automatically deleted after one hour, while Pro messages are retained for 72 hours. The Free plan is free, and Pro is $9.90 a year. A separate pricing note lists paid plans from $4/mo. Mail.cx says connections use TLS and that passwords and API tokens are stored as hashes. Its terms caution that message retention and recovery are not guaranteed, and advise against relying on the service for critical, sensitive, or business-essential communications.