Not all of them. I sent a couple of such mails, to only get back the freely available summary PDFs back. Even with the same checksum with the ones on the web.
True, but I'd say it's still worth the email asking. I used to work in the mental health field requested paywalled research papers on cognitive and developmental disabilities pretty regularly, and about 80% of the people I contacted sent the paper to me without much question.
The more we all do it, the more expected the practice becomes and with any luck, these money-grubbing journals will take note and start offering copies at a minimal fee or time-limited access.
The more we all do it, the more expected the practice becomes and with any luck, these money-grubbing journals will take note and start offering copies at a minimal fee or time-limited access.