Whether you manage multiple online accounts, want better organization, or simply wish to reduce spam, Gmail aliases are one of the most powerful—and often overlooked—features available to Gmail users. Best of all, they're completely free and require no additional setup. By using a few simple tricks, you can create virtually unlimited email variations that all deliver messages directly to your primary inbox.
The most common Gmail alias technique uses the plus (+) sign. For example, if your email address is [janedoe@gmail.com], and you want to subscribe to lovemytool.com, you can provide [janedoe+lovemytool@gmail.com], [janedoe+newsletters@gmail.com], or [janedoe+reading@gmail.com]. Gmail ignores everything after the plus sign, so every message still arrives in your regular inbox. This method makes it easy to identify which companies are sending you emails, create automatic filters, and quickly organize incoming messages into labels.