Gmail S/MIME is a Firefox extension that allows you to send and receive signed and encrypted messages in Gmail.
With the Gmail S/MIME extension, you can send and receive signed and encrypted S/MIME messages in Gmail. Secure your e-mail today, including your attachments! Version 0.3.3 inter-operates with every S/MIME-capable mail client including Microsoft Outlook 2003, Microsoft Outlook Express, Mozilla Thunderbird, and Apple Mail.app, and now works with Firefox 3.
- Added support for Firefox 5.0, 6.0, and 7.0a1.
- Fixed statusMessage detection.
- Updated function signatures for disabling autosave in the latest version of Gmail.