It seems like that could just about go in one’s email signature:
“If this message has an attached published paper, please do me the service of making this publicly available via arxiv /scihub or other agency as I’m typically bound from doing this by the publishers conditions”
People shouldn’t have to email you. Put your papers on arxiv.org or your own web site.
A number of journals actually have clauses around how you can’t publish it anywhere else if they accept it.
So you can’t ‘publish’ it in those places, but you can send it privately to people who ask.
People can ask me for it by sending a “GET” request to my web server using the HTTP protocol.
And then those can “leak” it :)
It seems like that could just about go in one’s email signature:
“If this message has an attached published paper, please do me the service of making this publicly available via arxiv /scihub or other agency as I’m typically bound from doing this by the publishers conditions”
Usually that’s just for their version. Arxiv the version before it was accepted.