Fair points, if I'm expecting an email though and don't get one I just check logs, which I do regularly anyway as often mail isn't delivered due to sender's pro

Fair points, if I'm expecting an email though and don't get one I just check logs, which I do regularly anyway as often mail isn't delivered due to sender's provider incompetence (dkim is hard apparently) - but I guess it also depends if you're expecting mail from random people in which case you'd probably want to be a bit more lenient yeah. Also re Gmail etc that is also true, but the difference there is it's limited to a couple whereas do also emits general abuse under the guise of "researchers" without identity or contact details etc - until they stop doing that they'll forever remain dropped entirely