Roundcube will ask you to setup your default identity upon your initial login. You will be presented with a pop-up similar to the following:
Make sure the information is correct. When finished it should look something like:
If you glanced over this screen on your first login or you want to update your default identity you can change it by navigating “Identities” under “Settings“.
Click on “Settings” from the main navigation.
Using the menu on the right click on “Identities” and the select the identity on the left you wish to edit. Update with the correct information and click on “Save“.
