gmail+SMTP(only) (oauth2)

[Uwe Brauer]

Hi

Today I got the unofficial approval to forward my email to an account of
my choice, if I can't access my mail with TLS (SSL or the gmail app
password anymore)

However I have been warned that the message should have a from field
with a domain of my university. (@mat.ucm.es for example).

Now I could either use

    1. The smtpmail (or sendmail) program of my linux machine (not sure
       about MacOS

    2. Or use a SMTP service that allows me to use a different form
       field, once the address has been verified. Gmail did this in the
       past (and maybe still does it).

In any case I have been warned that my mails could be blacklisted.

Anybody has experience with such a service/setting?

Regards

Uwe Brauer 

-- 
I strongly condemn Putin's war of aggression against the Ukraine.
I support to deliver weapons to Ukraine's military. 
I support the ban of Russia from SWIFT.
I support the EU membership of the Ukraine.