You can easily set up a signature for your outgoing emails using Roundcube or Horde webmail.
Roundcube
- Log in to your webmail at yourdomain.com/webmail.
- Click Roundcube to access your email.

3. On the left-hand menu, click Settings.

4. Go to the Identities tab.

5. Select the email address you want to create a signature for.
6. Type your signature in the box provided and click Save.

Horde
- Log in to your webmail at yourdomain.com/webmail.
- Click the Horde icon to open your email.

3. Click the Settings icon → Preferences → Mail.

4. Select Personal Information.

5. Scroll down to the Signature section. Type your signature.

- Use the HTML editor if you want a styled signature.

NB: For images, add a direct link to the image.

6. Click Save.
Your signature will now automatically appear whenever you compose an email from your webmail account.