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I just added another account to Mozilla Thunderbird email and it is not syncing with Bluemail android app?

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I can send emails from Mozilla Thunderbird desktop and Blue Mail android without any problems, however, it does not sync with each other. It does not show sent mail on each other and does not show I have read mail or moved it. I have several other accounts that I use using both apps and they work and sync just fine. I have already tried changing sync options on Blue Mail and deleting the account and re-adding it on Blue mail, but those did not fix the problem. Please advise on what to do?

I can send emails from Mozilla Thunderbird desktop and Blue Mail android without any problems, however, it does not sync with each other. It does not show sent mail on each other and does not show I have read mail or moved it. I have several other accounts that I use using both apps and they work and sync just fine. I have already tried changing sync options on Blue Mail and deleting the account and re-adding it on Blue mail, but those did not fix the problem. Please advise on what to do?

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You must use IMAP and not POP if you want folders to sync on all devices and the server. Sounds like you have something setup as POP.