There are two ways to use an email address to find someone online: see who owns it if you have the email address but not the name, or find someone's email address if you have the name but not the email address.

To find out who an email address belongs to, you need to perform a reverse search where you enter the email address to see what names are associated with it. To find all the email addresses someone uses, you need a people search tool that includes not only their name, but also their possible email accounts.

Both search techniques are possible, but not all people finders use both. Below are all the resources you need, no matter which camp you're in.

If you are doing a reverse email lookup to see who owns the email address, try typing it into Google or another web search engine first. A simple search query is fine, with no other words.