2 computers sync'd with email - one works fine but new one stopped receiving and filing sent messages
I have a Windows 7 that has all my email accounts which still works fine.... the new Windows 11 machine has the same settings and worked for 2 months until 2 days after latest update - when incoming on all accounts stopped and sending apparently sends but hangs saying unable to copy to sent folder owing to network or other issues. My original 11yearold Dell still works fine on all accounts but it should be pensioned off by now!? Any clues about whether to go back to an earlier version or is there something else I am missing? There are many irritating issues with Thunderbird but unfortunately I am not aware of a anything better - having tried most of them in 30 years!
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Yeah, I have been round the block over the years as well. Thunderbird has problems, but nothing like I experienced with the rest of the crop. Although this supernova thing has almost shook me loose.
Most of the problems I see where tings just choke up after an update, it comes down to an antivirus product. Usually serving self signed certificates that Thunderbird does not trust (there is a formal chain of trust. The likes of avast and kaspersky are not in it.) to monitor encrypted connections and mess with mail before it gets to Thunderbird.
Unfortunately Mozilla's certificate store is rather bad at bubbling problems to the point you see them, or making the issue understandable for the average user that has no idea what an encrypted connection is. SO that tend to be one of my first ports of call in investigating this sort of thing.
There are steps here that might get you to a point where you have no third party interference is occurring and you can look at if the issue is really Thunderbird.