In an ongoing effort to better secure our member’s communications, we have recently added support for encryption of inbound email to Sonic.net email addresses. Using Transport Layer Security (TLS), we are now negotiating encryption of email in transit with remote mail servers which support this protocol.
From our ops team’s notification: “… This (TLS) allows the session between the connecting server and our’s to be fully encrypted preventing messages from being available “on the wire” in clear text. Our outbound servers have supported this kind of encryption when sending mail to destinations that support it for more than a decade. At this time it looks like approximately 15-20% of inbound email is encrypted in transit.”
To test a mail server for encryption security, you can use CheckTLS.com, this will allow you to see if email from a correspondent at another email service provider will be likely to be encrypted.
Internet privacy is important to us, and we continue to improve our services to deliver the best privacy protection we can to our members.
Related: Electronic Frontier Foundation releases 2013 privacy score card