To add a custom email signature to RoundCube:
- Log in to Webmail, RoundCube
- On top right, click Settings
- Near the top left, click Identities tab
- Select the user in the left column for which you wish to add a signature
- In the right pane, select the Signature tab
- You can now write your signature. If you would like to add a fancy signature, click the HTML Signature checkbox near the bottom.
- Click Save and you’re done!