Due to popular demand Squirrel Mail will continue to be available at a new url, https://legacy-webmail.sonic.net. Squirrel Mail users can switch to this new URL immediately and should go ahead and update their bookmarks to prevent any interruption in service.
While we are aware that it will disappoint some users, Nutsmail and Atmail will no longer be available. It isn't practical for us to continue to support all of the different clients. We would have enjoyed the clarity and focus that providing a single client would have brought but it is clear that many users prefer Squirrel Mail and that it in some situations it simply is better suited than the new Roundcube based client.