Brian Vogel <britechguy@...>
Well, as a general statement no e-mail service providers should be blacklisting groups.io for spam. Since you can't get a groups.io message without having gone through the subscription process they are, by definition, not spam.
It appears that no matter how often Groups.io's ownership points this out, they keep the mechanisms in place that, when brainless users intentionally mark as spam or when it happens accidentally enough times they blacklist Groups.io again.
Unless customers start screaming at their e-mail service providers about this each and every time it happens for a sufficient number of times it will keep happening. It appears that presenting the facts to them from the e-mail list service owner, that they can check out with ease, simply is not enough.
Brian - Windows 10 Home, 64-Bit, Version 1809, Build 17763
I can hire one half of the working class to kill the other half.
~ , U.S. financier & railroad robber baron (1836 - 1892)