gpg4o vs Gpg4win
| gpg4o | Gpg4win | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | Yes | No |
| Paid from | €99.95/mo | — |
| Open source | No | No |
| Platforms | Windows | Windows |
| Free plan | Yes | Yes |
| Secure delivery | attachment | attachment |
| Recipient verification | identity | identity |
| Message expiry | No | — |
| Outlook integration | Yes | Yes |
| Gmail integration | No | — |
| Admin access controls | Yes | Yes |
Both are listed in Best Email Encryption Software, Best File Encryption Tools. On Specifiction, gpg4o scores higher on our published basis.