New to Mutt, unable to send messages in *any* attempted way

[X Tec]

On 2022-05-19 00:25:32, Jon LaBadie wrote:
> So I have NO IDEA IF IT WILL WORK, but you might try:
> 
> set sendmail="/usr/bin/msmtp [...] --passwordeval=$(gpg --no-tty -q -d ~/.user.gpg)"
> 
Thanks very much for your advise.

Actually I had already read about all the Bash stuff (and also other shells) regarding quoting rules, as well as variable/command substitutions.

But this specific part I'm having trouble with seems to be *not* from Bash or system's shell, but from Mutt *itself*; as in, Mutt's own "local shell" or configuration syntax (not sure how to call it...).

Nevertheless, I tried your advise, and got this:
msmtp: unrecognized option '--no-tty'
Error sending message, child exited 64 (Bad usage.).
Could not send the message.

You can see all what else I have tried already in my previous messages in this email "thread"/topic.

Hope someone else could give other advise, or if this is really not possible in Mutt, to confirm *why*.

Thanks again for your attention.