You probably already know this, but you can set up unique emails through gmail using the "+" character. name+servicename@gmail.com. This will let you keep track

You probably already know this, but you can set up unique emails through gmail using the "+" character. name+servicename@gmail.com. This will let you keep track of who is using what email address. Although, as this becomes more common knowledge, people could just strip off the anything after the "+" when saving email addresses.