Well it does turn out that if a group checks TextOnly
in MessagePolicies, there is no ReplyToSender footer link included
now, so in essence, a text-based email group is missing out on
some functionality not really directly-related to HTML or plain
text content.
The other weird thing that I discovered while testing this and
possible combos, using info provided in the manual, you are
allowed setting this particular combo which seems conflicting at
the very least:
Maybe it's wording but only one of those should be allowed to be
selected at a time, clicking the unchecked one should check that
and clear the other.
Turns out when both are selected the plain text wins.? I'll post
it on beta.
Cheers,
Christos