It is not running directly on Android, but there is a workaround if you have a decently fast tablet with sufficient memory. What you can do is install TB in Linux on your tablet. It works fine on my tab S7 (I think 6GB RAM/128 GB storage).
Install UserLand (for Linux) and XServer XSDL for display. I needed to use the Kali distribution - Debian and Ubuntu both gave problems, one in FF, the other in the package manager. Userland was pretty fast in giving solutions in the github issue, which I didn't try yet, because Kali worked out of the box.
Userland wiki/help gives a decent description of what to do. If more info is needed, i can give more details here.
Thunderbird needs to be installed: sudo apt-get install thunderbird. For access to a local imap server, I needed the ip address, PC name could not be resolved.
Heise gives a decent instruction in German, but they forget the sudo in front of all commands which I needed on the S7:
https://www.heise.de/tipps-tricks/Linux-auf-dem-Smartphone-nutzen-so-klappt-s-4038358.html
Now I have access in TB to all subfolders, and with keyboard and mouse, the tablet is actually a decent Linux computer (so far ...).
good luck, Klaus