Mailinator vs TmpKit
Mailinator
mailinator.comTmpKit
tmpkit.comSide by side
| Figure | Mailinator | TmpKit |
|---|---|---|
| Price from | $79/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Android | Yes | — |
| API | Yes | — |
| Plans published | 13 | 1 |
| Spec score · Disposable Email Services | 9.0 (#3) | 7.0 (#25) |
| Spec score · Temporary email services | 8.7 (#10) | 7.3 (#34) |
| Founded | 2003 | 2025 |
| Receive-only | Mailinator is receive-only and cannot send email or fill out forms. | Users can read incoming messages but cannot compose, reply to, or forward email. |
| Security controls | Mailinator states that traffic is HTTPS-only, servers are firewalled and Cloudflare-proxied, and production is separated from development and testing environments. | TmpKit says it uses HTTPS, access controls, short retention, HTML sanitization, attachment handling controls, and operational monitoring to reduce risk. |
| Support | Documentation is available 24/7/365; the support page says public issue emails are usually answered within 24–72 hours and subscribers receive priority support. | Users can contact TmpKit through its contact form or the support email listed on its contact page. |
Plans
Mailinator
- Public - FreeFree
- Public - FreeFree
- Verified ProFree
- Verified ProFree
- Business$79 a month
- Business (annual)$79 a month
- Business$99 a month
- Business Plus$159 a month
- Business Plus (annual)$159 a month
- Business Plus$199 a month
In their own words
Mailinator
Mailinator provides temporary inboxes and tools for testing email and SMS workflows. Developers, QA teams, and businesses can use it to check delivery for OTP, MFA, onboarding, password recovery, and other email processes at scale. Paid subscriptions include private testing domains, where messages can arrive at any address without creating an inbox first. The REST API retrieves inboxes, messages, and SMS, injects messages, and connects with CI/CD pipelines. Inbound webhooks can accept HTTP POST messages from sources such as alert systems, Zapier, or Twilio, then apply configured rules. SMS can be routed to an inbox or API for automated OTP and 2FA testing. The free public inboxes are readable by anyone, and messages typically auto-delete after several hours. Mailinator is receive-only: it cannot send email or fill out forms. The Public - Free plan is free to use without sign-up. Business costs $79 a month billed yearly; a two-week Business trial is listed. Other plans include Verified Pro at free, Business Plus at $159 a month billed yearly, and Enterprise at a price agreed with the maker with custom pricing.