To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!Close
Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Protect your privacy! Rated 5 out of 5 stars
Great extension to increase your own personal security and privacy! Everyone should encrypt their email whenever possible. A great S/MIME beginner's tutorial is available for novices at http://marknoble.com/tutorial/smime/smime.aspxThis review is for a previous version of the add-on (0.3.10).