Gmail Tips #1: The 'Plus' Side of Gmail

Like many Email providers, Gmail supports the standard "plus" addressing scheme. But just what is it, and how can it help me?
The "plus" method of addressing lets you add additional words to your account name (the "left side" of your email address.) For example, if your email address is "mail2sohag@gmail.com", you could add "+club" when you give your email address to members of a club to which you belong. So, your email address would now be "mail2+sohag@gmail.com". But why would you want to do this? Think of the "plus" word as an extra "keyword" or "tag" that you can use to better manage your messages.
Using our example, say you email an invitation to your friends in a club asking them to rsvp to the invitaion. You ask them to reply to "mail+2sohag@gtmail.com" when sending you a responseif they don't want to come, and reply to "mail.2+sohag@gmail.com". Assuming they follow your directions, You can then set up a Gmail Filters to automatically route emails to specific Labels based on the addresses. It's a simple example, but the uses can be numerous.