Creating and using distribution lists can be a time saver when you have certain groups of people (clubs, organizations, close friends, professional contacts...) that you want to communicate with frequently as a group. The two links below will walk you though the steps for creating and applying a contact/distribution list in Gmail.
Creating Contact Groups
Managing Contact Groups
Importing, Exporting & Syncing Contacts
Saint Mary's also has many community distribution lists available to it's email users. Please see the article on SMUMN Global Distribution lists.