There are two different types of user categories with different needs when it
comes to support.
If you're using SquirrelMail to read and write mails, but someone else manages
the SquirrelMail installation you're using, you're an end user.
SquirrelMail is typically installed for end users by their employer, the school
they attend, some organization that the end user is a member of, a hosting
company, or an Internet service provider (ISP).
Support for end users
If you're responsible for managing a SquirrelMail installation, you're a
system administrator. Persons in this category are usually responsible
for installing, configuring, patching, and upgrading the SquirrelMail
installation. Most administrators also have access to the other parts of the
mail system, such as the user database.
Support for system administrators
(Or find commercial support)