Web and API based SMTP testing
Mail testing
Fake SMTP servers with a web inbox that catch the mail an application sends during development.
Changes in this category (RSS)
Side by side
| Tool | Stars | Licence | Terms | Self-hosted | Language | Latest | Last push |
|---|---|---|---|---|---|---|---|
| MailHog | 16k | MIT | Open source | No | Go | v1.0.1 | 2024-02-13 |
| Mailpit | 11k | MIT | Open source | No | Go | v1.31.4 | 2026-10-06 |
| MailCatcher | 6.8k | MIT | Open source | No | Ruby | v0.10.0 | 2026-09-16 |
| smtp4dev | 4k | BSD-3-Clause | Open source | No | C# | 3.15.0 | 2026-10-05 |
| Inbucket | 2.3k | MIT | Open source | No | Go | v3.1.1 | 2026-10-06 |
5 tools
An email and SMTP testing tool with API for developers
Catches mail and serves it through a dream.
smtp4dev - the fake smtp email server for development and testing
- Language
- C#
- Licence
- BSD-3-Clause
- Stars
- 4k
- Latest
- 3.15.0
- Last push
- 2026-10-05
Disposable webmail server (similar to Mailinator) with built in SMTP, POP3, RESTful servers; no DB required.