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