I have used Trello for some time. There is lots of important information in the account.
I can't remember which email I used for registration. I checked all my mailboxes but can't find any clues.
I can just remember my username. I also have the information of all my boards.
I also invited a friend to some boards, but he can only sees my name, not the email address I used.
What can I do? I really need this account.
Best Answer
As per the Trello help pages:
Having said that if you have a handful of email addresses that it could be, then use the password reset form for each email. It will email you a reset link (providing that you did actually use one of those addresses)
If you no longer have access to the email address (or don't know what it is) then you are stuck I am afraid.