How do I create or edit an email signature in Webmail?

For Roundcube Webmail, sign in at https://webmail.globalmcs.net, open Settings → Identities, and select your address. Enter your signature and save. Where available, enable the HTML editor to include formatting, links, or a logo.

Other webmail apps use different menus. A webmail signature does not automatically configure the signature in Outlook or other mail clients.