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How can I find my e-mail account?

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I made Firefow sync long ago. Ane today I want to login Firefow sync, but I can't remember my e-mail account that I established. I can remember passwords. But I can't remember e-mail account. How can I find my e-mail account? Please let me help.

I made Firefow sync long ago. Ane today I want to login Firefow sync, but I can't remember my e-mail account that I established. I can remember passwords. But I can't remember e-mail account. How can I find my e-mail account? Please let me help.

Chosen solution

Open Options > Security --> Password - Saved Passwords Your Sync username is listed in chrome://FirefoxAccounts = "username" is the email address for your Sync account.

And if "long ago" is over 15 months ago - before May 2014 - that old Sync account would need to be updated for the Firefox 29+ version of Sync.

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Chosen Solution

Open Options > Security --> Password - Saved Passwords Your Sync username is listed in chrome://FirefoxAccounts = "username" is the email address for your Sync account.

And if "long ago" is over 15 months ago - before May 2014 - that old Sync account would need to be updated for the Firefox 29+ version of Sync.