Received from Shal Farley at 11/12/2018 07:49 AM UTC:
That's a bit more mysterious, because Subject text can't include a link. If your email interface linkified it, it could only be as a reply to the group - it wouldn't have known the group's home page address.
Shal
Shal,
There's no telling what nonstandard nonsense Apple and Microsoft are up to these days. ;-)
But seriously, I think the fix is easy... change the message to read something like the following... (bearing in mind I'm going on what I've read here, never having seen such a message myself.)
"You have been invited by <me> to join the Groups.io group groupname @ groups.io, located at
/g/<groupname> ..."
Note the spaces in the PLAIN TEXT email address... which alternatively could be "groupname(at)groups.io"
Jim H
