How to set Filters (Rules) in Mail.app (Mac OS X)

You can create filters or Rules, as they are known in Mail.app, to ease the filing of messages.

1. Go to Preferences and select Rules from the list.
2. You can add rules that look for various strings and act on those messages that contain the string. For example, anything coming from Helpdesk@southwestern.edu could be moved automatically to a mailbox titled Helpdesk email.