[edited for clarity]

Sorry this is so frustrating for you.

I have reread all your messages, especially https://support.mozilla.org/en-US/questions/1480596#answer-1697659 which I see as the best description of your situation. [1]

It sounds like you are consistently getting new mail. But still missing many older messages.

Based on what you have posted so far, I conclude that it will not be possible to recover the missing messages, because a) you do not [have] backups, and b) [you have said] the missing messages are also not on the server.

Unless you have some other source to get these messages?

[1] "AOL: Can you see the missing messages when you log into aol.com? If not, do you have a back-up?" No/No "GMX: Is the account working now? Can you see the missing messages when you log into Web mail? If not, do you have a back-up?"

-Account is workin. I dont see missing messages.

Protest

This is not a technical issue but an organized criminal attack on my private security. Thunderbird acts here as accomplice.

E-mails has been completely disappeared from accounts of AOL and Gmx in 2024. The time periods of the stolen e-mails from AOL and Gmx are not the same. This rules out a computer defect and points to human intervention.

A thirth account of Gmail has been removed off Thunderbird. Additionally there were removed several personal folder with important documentation.

The staff of Thunderbird has ignored to take measures from the beginning. At least the delayed questions lack any recognizable intention to reach a solution.

koffie

Please suggest, what should be our next step?