Webmails supported by FireGPG FireGPG is discontinued. Please read details here.
| Webmail | Inline signs | Inline encryption | Check of inline signs | Decryption of encrypted mail (inline) | OpenPGP/mime support |
| Old Gmail interface | Yes | Yes | Yes | Yes | No |
| New Gmail interface | Yes | Yes | Yes | Yes | Yes |
| Yahoo | Menu with autowrap | Menu | Menu / PGP block handler | Menu / PGP block handler | No |
| Roundcube | Menu with autowrap | Menu | Menu / PGP block handler | Menu / PGP block handler | No |
| SquirrelMail | Menu with autowrap | Menu | Menu / PGP block handler | Menu / PGP block handler | No |
| Horde (Imp/Dimp) | Menu with autowrap | Menu | Menu / PGP block handler | Menu / PGP block handler | No |
| Other | Menu | Menu | Menu / PGP block handler | Menu / PGP block handler | No |