Downloads the same email even though it is deleted on the server
At one point one of my Thunderbird accounts started downloading one message several times, and started blocking any other messages. The other accounts work fine. I deleted the subject file from the server and unchecked all download options in the Server Settings for this account, to no avail. I also deleted the popstate.dat file from the Mail folder - still the same. Whenever I click Get Messages for this account, Thunderbird is showing that it is downloading 20-30 new messages (even though all download options are checked off), but in fact it downloads only a few instances of the same message.
Chosen solution
Disable your anti virus email scanner. The confirmed reports I have seen of this behaviors are with Norton products, but if one can do it they all can.
Once you have completed a successful download you can continue using your anti virus if you feel you have to.
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Chosen Solution
Disable your anti virus email scanner. The confirmed reports I have seen of this behaviors are with Norton products, but if one can do it they all can.
Once you have completed a successful download you can continue using your anti virus if you feel you have to.
Actually this solution did not work. But what worked was when I went to our hosting server (SiteGround), found the persistently duplicating message (which had already been deleted and crossed out) and purged it.