Multiple email signatures in Webmail

Webmail now supports multiple email signatures. You can create and manage as many signatures as you need, set one as your default to appear automatically in the composer, or choose "No Signature" to send without one. You can change your default signature at any time, and if you delete your current default, another signature is automatically promoted to replace it. The interface also prompts you before leaving if you have unsaved signature changes, helping prevent accidental data loss.