I'm saving them the trouble of clicking a meaningless (to them) link to undo a meaningless (to them) action, something they themselves had nothing to do with. Even if they click on the resubscribe link instead of being saved the trouble by me, they still have NO IDEA what's going on and are not then "training" their spam filters because none of them finds any groups.io email marked as spam. They might as well be in Alice's Wonderland. The direct-add message I use also apologizes to them for the inconvenience of having been unsubscribed for however long they were unsubscribed for.
These are sick, often critically ill cats we're dealing with, whose lives may be on the line if the person doesn't receive messages. I'm not going to hold things up for the minutes or days longer it takes them to find the resubscribe email and click on the link than for the time it has taken me to notice the issue and direct-add them back in.
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J
