| Feature | SnappyMail 2.5.0 | RainLoop 1.15 |
|---|---|---|
| IMAP | ✔ | ✔ |
| SMTP | ✔ | ✔ |
| Sieve | ✔ | ½ (own scripts only) |
| Responsive design | ✔ | ½ (user-agent sniffing) |
| Dark mode | ✔ | ❌ |
| Gmagick/ImageMagick | ✔ | ❌ |
| Google FLoC disabled | ✔ | ❌ |
| ICU 4.6 domainnames | ✔ | ❌ |
| MySQL/MariaDB utf8mb4 | ✔ | ❌ |
| Phar | ✔ | ❌ |
| Plugins CSS | ✔ | ❌ |
| Remove message colors | ✔ | ❌ |
| Set Sender | ✔ | ❌ |
| Sort messages by date/size/subject | ✔ | ❌ |
| Spam score visible | ✔ | ❌ |
| Syslog login errors | ✔ | ❌ |
| 2FA | 🔌 (not yet) | ✔ (TOTP) |
| Change password | 🔌 | ✔ + 🔌 |
| Default Admin password | ❌ (random) | ✔ (12345) |
| DropBox | ❌ | ✔ |
| GMail | ❌ | ✔ |
| Internet Explorer | ❌ | ✔ |
| OAuth2 | ❌ | ✔ |
| POP3 | ❌ | ✔ |
| Sentry | ❌ | ✔ |
| X-Mailer header | ❌ | ✔ |
| jQuery | ❌ | ✔ |
| WYSIWYG (only SnappyMail supports plugins) | ||
| Squire | ✔ | ❌ |
| CKEditor | 🔌 | ✔ |
| Pell | 🔌 (not yet) | ❌ |
| Quill | 🔌 (not yet) | ❌ |
| Suneditor | 🔌 (not yet) | ❌ |
| TinyMCE | 🔌 (not yet) | ❌ |
| Trix | 🔌 (not yet) | ❌ |
| many more | 🔌 (not yet) | ❌ |
| Social: | ||
| ❌ | ✔ | |
| ❌ | ✔ | |
| Gravatar | ❌ | ✔ |
| ❌ | ✔ | |
| Size and compression: | ||
| Brotli | ✔ | ❌ |
| PHP Gzip | ✔ | ❌ |
| Login (no compression) | 490 KB | 2.13 MB |
| Login (compressed)* | 170 KB | 602 KB |
* Login compressed output for SnappyMail is pre-compressed using Brotli, and RainLoop is based on Apache deflate.