I mistakenly subscribed to academia newsletters, I kept receiving emails without knowing how to unsubscribe because there's no link for that in the bottom. Today I noticed that if I click view entire message, only then I can unsubscribe.
The newsletter is too big to fit in an email and an unsubscribe link must be added from within the email.
Well at least I, because I can't for a small link in an email, press control + F and search for it, in SE newsletter, I cannot do that, unless I click view full message.
I'm using gmail, on a 22 inch screen, firefox latest version, also gmail android, also gmail chrome. If gmail shouldn't be supported by default, I don't know what is.