Securing your webmail is pretty much out of your hands. If your network administrator has enabled a web application like IMP or SquirrelMail, they are probably using the HTTPS protocol and SSL to secure the transaction between the mail server and your browser. The most you can do is make sure your browser has an adequate ‘cipher strength’. Most new browsers come with ‘128-bit cipher strength.’ Key length really isn’t a measure of security, but a longer key is better than a shorter key, all other things being equal. Note: If you do not see something like https:// in the URL you are using to view webmail, you are probably not having an encrypted conversation with your mail server. The https:// is usually accompanied by a port number ending in 443.