I’m happy that Termux runs so fine on my new Fairphone 6.
On my old phone (Moto G5) the email client Mutt is working fine in Termux. But on my new phone, with identical .muttrc, I get the error “No authenticators available” when trying to send email.
Can anybody tell me why?
I did not state it, but on the old phone there is Google’s Android 8. Not /e/OS. Makes me suspect that this is an issue with /e/OS. Not Mutt of Termux?
(The only permission that Termux is not given on the Fairphone 6 is “sensor” in Norwegian. I don’t know the English term.)
Friend, configuring and using Mutt is hardcore, already on Linux. On a phone it’s even harder.
BTW: authentication requires sometimes additional stuff not compiled into a binary, and then also in the right version (remember SSL/TLS and OAuth). Maybe your old phone has these libs, your new phone hasn’t. Perhaps changing the authentication method could be a solution (probably not because only one method is supported on the server).
Thanks for answering, friend! You are probably right, but I’ve been running Mutt on my machines for 20 years without too much problems.
I tried running “locate mutt” and the listing of 95 files is identical on both phones! The content of the files is probably different, of course. And I’m not going to inverstigate that further with my limited “hardcore” knowledge 
I don’t really need Mutt (or any mail client) on my phone(s) as I have my computer for that, mostly. But maybe I should start investigating the other text based alternatives - just for fun? Hmm…
missing libsasl2 ? Index of /apt/termux-main/pool/main/libs/libsasl/
That’s what I thought, something which not belongs to Mutt himself but is needed for a concrete authentication.
On a computer I’m also rather text based. Emacs/Gnus rulez (for 35 years) for mail and news!
On a phone where you don’t have a proper keyboard and a rather tiny screen with only short lines text based applications are always somehow limited. And a second thing plays also a role: mobility. When you’re on the move in public or under direct sunlight you can’t type as you would do on a stationary computer, you need then faster and clearer actions (I mean a GUI).
If you can’t renounce a complicated, nebulous configuration 
you could try FairEmail, you get a modern (this means: OAuth ready), sophisticated, feature rich, stable and also user friendly e-mail client.
Thanks again, irrlicht.
To tcecyk
Maybe you are right! On the Moto, dpkg -l libsasl* gives:
ii libsasl 2.1.28-2 arm
while on Fairphone 6 it is:
ii libsasl 2.1.28-2 aarch64
There is probably nothing I can do with that?