by Tom Nelson
Mail rules are a set of instructions that tell the Mail application how to handle specific types of messages you receive. Mail rules can handle a wide range of mail conditions, from basic to complex.
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At the basic level, perhaps you have a friend who is always sending you jokes and Internet memes. Sure, you like a chuckle now and then, but the emails appear in your inbox all day long. A mail rule can quickly sweep up all of your friend’s jokes and move them to a folder for you to read when you need a good laugh.
A mail rule can also be complex, such as looking for alerts sent by the various financial institutions you do business with, highlighting the messages and letting you know they need to be dealt with swiftly.
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