Mail.cx vs SecureTempMail
Mail.cx
mail.cx
SecureTempMail
securetempmail.comSide by side
| Figure | Mail.cx | SecureTempMail |
|---|---|---|
| Price from | $0.82/mo | $3.25/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | Yes | Yes |
| Plans published | 4 | 3 |
| Spec score · Temporary email services | 9.1 (#4) | 8.8 (#8) |
| Spec score · Temporary Email Services | 8.9 (#6) | 8.9 (#7) |
| Real-time delivery | Server-sent events push newly received messages to the browser immediately. | Incoming mail is delivered over a live connection and optional desktop and sound alerts are available. |
| Receive-only | The service receives email but does not provide email-sending functionality. | The service is receive-only and does not support sending email from temporary addresses. |
| Support | The contact page says support normally responds within two business days and prioritizes security and abuse reports. | The contact page lists separate email addresses for general support, security and privacy, and API or partnership inquiries. |
| Use cases | Mail.cx targets developers, QA teams and product teams testing verification, transactional email, notifications and application integrations. | The site lists sign-ups, one-time purchases, content downloads, gaming and forums, team vendor sign-ups, and QA or end-to-end testing as use cases. |
| What it does | Mail.cx provides short-lived email inboxes for receiving messages and testing email workflows. | SecureTempMail provides disposable receive-only inboxes for sign-ups, downloads, verification codes and one-off messages without registration. |
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.
SecureTempMail
SecureTempMail provides disposable inboxes for sign-ups, downloads and one-off verifications without requiring an account. Users choose an inbox lifetime from 10 minutes to 24 hours, after which messages are deleted. The receive-only service cannot send email from temporary addresses. It detects verification and login codes for copying, and displays incoming HTML in a sandbox with scripts disabled to neutralize tracking pixels and malicious markup. SecureTempMail says inbound mail uses TLS and opportunistic STARTTLS, and that it does not log IP addresses against inbox activity or build advertising profiles. Its API supports inbox creation, message reading and deletion, and real-time webhooks. The Chrome extension offers per-site aliases, one-click autofill, OTP notifications and a side-panel inbox. Desktop apps are offered for Windows, Apple Silicon Macs and Linux; Intel Macs are not yet supported. The free plan lists unlimited disposable inboxes with up to 24-hour lifetimes and rotating domains, and is ad-supported. Premium costs $39 a year and includes up to 30-day retention, private domains, attachment downloads, no ads, inbox history and search, and priority delivery. The Developer plan costs $190 a year and includes 100k API requests per month, catch-all domains, REST API and webhooks, and an email support SLA.