I have had on three different users where the email get so scrambled
up, you can get a email and it's from 2 different people that you know
on the same email, a case where you could only get email from scam
site. there's no set pattern as how the emails come in. The out going
email shows as normal.
I have pulled their address book and deleted Thunderbird and
.thunderbird in home directory.
reinstalled Thunderbird and put the address book back in .thunderbird
and every incoming email is normal.
Thunderbird is going Bonkers.
This sounds like something might have over-written or "munged" the mail
files stored in your local mail files or you have some odd characters or
formatting in them. These files are usually stored in your home
Look at Edit > Account Settings... and on the resulting dialog, at the
bottom, should be the location "Local directory:" where your mail is stored.
I have seen some strange occurrences where something is stored in the
file and subsequent processing of the file by Thunderbird will cause the
T-bird display of the messages to be "wonky" (that's a technical term)
in a fashion that you seem to be describing, if I understand your
description. I was only able to save the file that was bad by
dissecting it half by half until, by the process of elimination, I found
the segment that was bad. I couldn't recover 100% but I got most of it
back. If there is nothing you can't live without, I would just
eliminate all the mail in the particular directory (folder) and go on
At the time, probably 1 to 1.5 years ago, I put this down to some
strange embedded characters. I don't know, for certain how the strange
characters got there. Whether they came in the email or were introduced
in some fashion after receipt. I never really determined the true cause
but haven't seen anything like it since.
Do the people (accounts) that were having issues receive email from the
same sources? Could that have received the same odd email? Is the mail
from an unusual source?
HTH in some small way.