To find your email address:
From your computer
From your phone or tablet
From a shared folder
If you’re a member of a shared folder, another member of that folder can look up your account’s address.
In the list of shared folder members, the person will be able to see the email address next to your name.
If you have a paid Dropbox subscription
If you have a paid Dropbox subscription, you can use our credit card lookup tool to find the email address associated with a charge.
If you see an “Account doesn't exist” error when you try to sign in to Dropbox, you may have signed up for a Dropbox account with a different email address. The “Account doesn't exist” message is usually caused by a mistyped or incorrect email address. In other words, the actual email address on your account is different than the one you typed in. If you see this message, first try signing in again. Be sure to check the email address and its spelling.
If this you know your email address and still receive this message, or if you received an email notification from us about an inactive account, your account may have been deactivated.