Flying SquirrelMail is a standard based web e-mail client that supports IMAP and SMTP protocols. It also provides other highly configurable features like:
Use Flying SquirrelMail by logging in with your engineering username and password at https://www.egr.msu.edu/mail/
If you are subscribed to many mailing lists, it is very hard to distinguish which messages came from where. With Message Highlighting, you can have the background color of all messages from one mailing list be different than the color of another.