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Old 4 Oct 2021, 01:22 AM   #2
JeremyNicoll
Essential Contributor
 
Join Date: Dec 2017
Location: Scotland
Posts: 484
I'm not a Thunderbird user, but if it's like Firefox it may have optional extensions. Firefox problems are very often due to extensions (because their authors don't continually update them for newer versions of FF).

So, do you use any? If you do, do the problems go away, or change, if you temporarily turn off the extensions? Maybe TB has a "safe mode" that achieves more or less that?


For the problem that affects both a Windows & Mac machines, are they both seeing those mails held on a server somewhere, or do the separate versions of TB have local (ie on your PCs) copies of the email files?

If the mails are held on a server, are you able to see them properly using a webmail system (if the mail provider has one)?


If you export an example of a non-properly displaying email, to a text file of some sort, and inspect it (in a text editor) does it look as you'd expect - eg does it look in any way corrupt? (Clearly that's only possible if you know what emails' internal structures should look like.)

If you then import such a file, does the imported copy display properly?

If you have such a file, containing an email that has no confidential info in it, you could possibly put it somewhere - a file-sharing site or in the cloud - tell us where you put it, and let other people see if it displays properly for them. It would be handy also to see a screenshot of how the incorrect display looks for you. You might want to edit out your email address in the text file, and blur out that detail in the screenshot, though.
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