Thank you for your help and answer. I hope I can continue writing to you in German as well? I can't find a contact person and the name of my Mozilla account has been changed; is that normal? Thunderbird Portable Help Question: A number appeared after my email address, so "email" and "1954". Who is that? Is that normal? Question: Thunderbird Developer Toolbox: Can you see in the program? Can you see my emails? Question: Are there any Thunderbird users left who speak German? Questions: Thunderbird Portable The archive option isn't updating? How long does the backup take? Different Thunderbird versions display a programmed year date in the archive option. For example, 2021 in one version and 2024 in another. Is that normal? I can't change anything. It's as if it's accessing some kind of backup and maybe even sharing it, and I don't know what's correct. Question: Update Channel Ellipse Update Channel esr. Previously, there were different channels. Isn't another channel better? I've read that it's more stable than switching. Is that true? Information regarding the question below? 140.9.0esr (64-bit) Thunderbird is up to date. You are currently on the esr update channel. I'm experiencing stability issues with this one. Thunderbird, Portable Edition portableapps - 1.0 Thunderbird is up to date. You are currently on the release update channel. New Download General Information In Thunderbird Portable, there is a help page: https://support.mozilla.org/de/products/thunderbird Please reply and thank you very much for your help.