Yep! To merge two accounts together, email email@example.com requesting an account merge and mention the email addresses that are currently linked to both accounts. We will send a verification to each email address to confirm the merge request. Once we have verified that you are the owner of each account, we will merge the two accounts together and notify you when the merge is complete.
You will then be able to log in to your account using either email address and you will have access to all of the documents and threads created by both accounts.