If you have a Gmail account, you have unlimited addresses and you may not even know it. There are two ways to achieve this, adding a phrase (“plus-addressing”) and adding a period to your address.
This is not a Gmail specific trick, some other email clients can create unlimited addresses as well.
Let’s say that your Gmail address is email@example.com and you want to automatically label all work emails. This can be done simply by adding a plus sign and a phrase to make it firstname.lastname@example.org. Any email that is sent to email@example.com will go to your firstname.lastname@example.org account.
Let’s again say your Gmail address is email@example.com. You can put a period in any spot before the “@” sign and the email will still be delivered to your account. For example firstname.lastname@example.org and email@example.com will both work.