Go to the Access Management page. If you accessed your account recently from the computer or browser you're currently using, you'll see a username suggestion appear under the Username or E-mail field.
If you used this address to communicate with your friends, family or colleagues, try to contact them, for example, through social networks. Maybe, they can remember your address or find a message from you in their inboxes and can tell you the address this message was sent from.
If you remember your username, but have forgotten your password or, when you try to log in to your account, you get the message “Wrong username/password! Login failed”, please follow our recommendations.