Download of redmail.com 1.0 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This Mac app was originally designed by redmail.com. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
redmail.com is the latest in secure webmail technologies and include Virus Scanning, Spam Filtering, Calendaring, POP and IMAP in the standard package.
Storage options range from 10Mb to 1Gb. The service supports synchronisation with Apple's iCal (version 1.5.1 and later) as well as Secure Email using S/MIME from within the webmail client.