How to change the Plesk Premium Email webmail logos?

Question

How to change the logos used in webmail when Plesk Premium Email is installed?

Answer

The Plesk logo in the top-left corner, and the watermark when no content is selected, can be manually replaced directly on the server.

1. Prepare the custom logos and upload them to the server.

   Note: The images must be in SVG format.

2. Connect to the server over SSH and backup the original files

   # mv /usr/share/roundcubemail/public_html/assets/skins/plesk/images/logo.svg{,.orig}
   # mv /usr/share/roundcubemail/public_html/assets/skins/plesk/images/logo-small.svg{,.orig}

3. Go to the directory where the custom logos were uploaded and move them to the Plesk directory

   # cd /path/to/directory/with/uploaded/custom/logos/
   # mv logo.svg /usr/share/roundcubemail/public_html/assets/skins/plesk/images/
   # mv logo-small.svg /usr/share/roundcubemail/public_html/assets/skins/plesk/images/