I have several POP accounts from one email service each with its own profile, and several other (IMAP) accounts from another service that share a profile, which includes access to local folders that store saved email from all three accounts. I like the shared profile as I can see all accounts there by opening Thunderbird once, but I have no interest in seeing the email from multiple accounts in the same inbox for organizational reasons. Apparently I created the shared profile when I first opened those accounts. I am interested in combining the now separate POP accounts/profiles so that they all open at once in TB, but not in the same profile as those currently sharing a profile again for organizational reasons. End results two profiles one for service one and one for service two each of which opens showing all the accounts from that service and having local folders that are shared. Is it possible to do that? I expect there may be a problem with combining local folders which are currently in three separate profiles so the stored emails are accessible in the combined profile. In that event, I would plan to keep the separate profiles only to access those stored emails and disconnect them from getting new email using them only to access the local folder stores they already contain, and use the new combined profile to get new emails and store only new email copies locally.