SpamSieve vs Zerospam
| SpamSieve | Zerospam | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | Yes |
| Paid from | — | €5/mo |
| Open source | No | No |
| Platforms | macOS | Web |
| Free plan | No | No |
| Malware scanning | No | Yes |
| Attachment scanning | Yes | — |
| Supported mail platforms | Apple Mail, Airmail, GyazMail, MailMate, MailMaven, legacy Outlook, Entourage, MailForge, Mailsmith, Postbox, and PowerMail | — |
| Deployment type | mailbox_app | cloud_gateway |
| Phishing detection | — | Yes |
| Quarantine access | — | admin_only |
Both are listed in Best Email Anti-Spam Software. On Inferse, Zerospam scores higher on our published basis.