Using Email at GMU
Access GMU Webmail system at: mail.gmu.edu
Using an Email Client
For instructions on how to configure Thunderbird, the university supported client, click here for step by step instructions.
While Thunderbird is the supported client, you can also use most email clients such as MS Outlook, Apple Mail and the web based Gmail. This is the general configuration information you'll need:
IMAP Recommended (Comparison between IMAP and POP)
Incoming Mail Server: mail.gmu.edu
Outgoing Mail Server: smtp.gmu.edu
Turn on Authentication and SSL encryption
Increasing your Email Quota (storage space)
GMU offers limited space for your emails (50mb for students and 100mb for faculty and staff). If you exceed your quota, you will not be able to receive incoming messages.
To increase your email quota, call the ITU Support Center at: 703.993.8870 or email at support@gmu.edu. There is a maximum amount of space you can gain each time you call.
It is strongly recommended that you configure an email client on your personal computer so that you can have enhanced capabilities, including the ability to archive your old messages in local folders on your computer, freeing up space on the GMU server.
Finding GMU Addresses and Setting up LDAP Directory Server
Finding people at GMU is easy using the People Finder
You can also configure your email account to auto complete using addresses from the GMU Directory. For the configuration information on how to do this, click here.
Features Available in the Web Mail System
View your email quota and see how much space you have left.
Set up a vacation message to let people know when you are unable to respond right away.
Change settings to make the messages easier to manage online: Show 100 messages instead of only 20, Sort the messages by oldest or newest, etc.
Forward your messages to another email address. Remember to periodically delete the messages from the GMU server, or your in box will fill up.



