As cPanel removes SquirrelMail starting in version 78 after not being updated since 2013, VPS owners may want to be proactive in forcing users to get comfortable with Horde or Roundcube. Below we cover how to disable SquirrelMail from WebHost Manager (WHM).
- Log into WHM.
- Select Tweak Settings from the left.
- Search “Squirrelmail“.
- Select Off to the right.