Yes! However Soverin is ‘client independent’, which means that we are able to offer you more options for webmail.
Currently we are using Roundcube 1.2 with some extra features that make life a little bit easier.
The main webmail can be found at: https://mail.soverin.net
Alternatively we also have a webmail available powered by Rainloop. The Rainloop webmail is provided as an extra service and is considered *beta*. Let us know if you have any feedback via firstname.lastname@example.org.
For Rainloop, point your browser to: https://beta-mail.soverin.net