Message filters can be created to help manage your email.
For example, using filters you can automatically process new mail to
file it, label it, delete it, change priority, flag it, or perform
other actions. To access message filters, start the Mail
application; on the Menu Bar, select
Tools > Message filters...
You will see something like the Message Filters
menu shown below.
You can create as many filters as you like. The filters can be customized to select messages based on subject, sender, date, age of the message, and other criteria (and combinations of these).
