Use Microsoft Outlook if you are using Microsoft Exchange or Scalix. Otherwise, use Mozilla Thunderbird.

• Microsoft Outlook
• Mozilla Thunderbird

We can help you pick which ones to use - or simply start using a Thawte certificate for S/MIME.

• Thawte email certificates for email encryption using S/MIME.
• GnuPG - allows sending encrypted emails
• Enigmail - GnuPG plugin for Thunderbird