How can I activate or deactivate webmail clients?
Click on the “Tweak Settings” link under “Server Setup”. Within the “Mail” section is a list of check box with the following headings:
“Horde Webmail”
“Neomail Webmail”
“SquirrelMail Webmail”
Chose the webmail client you would like to use apply the changes by clicking on the “Save” button at the bottom of the page.