If a group owner invites someone who has a gmail address, they get this friendly, well-worded email:
Invitation to join the <GroupName>.groups.io group
You have been invited by <OwnerName> to join the Groups.io group <GroupName>.groups.io.
The following message was included by <OwnerName>:
<umpteen-line invitation text from group owner>
To accept the invitation, please reply to this email, or you may accept the invitation <CodedLink> on the website.
If you have questions about this invitation, send them to <GroupOwnerAddress>
To accept the invitation, please reply to this email, or you may accept the invitation on the website.
If you are not interested, or if <InviteeEmail> is not your email address, please ignore this email.
The Groups.io Team
Sending a reply or clicking on the coded link both work fine.
However, Gmail makes
in the first line into a live link.
That link is the first thing the recipient sees.
A significant percentage of invitees will not see the rest of the instructions after the group owner's text and will simply click the link.
If the recipient clicks the link, they go the homepage for the group, with a button "Apply for Membership In This Group"
When they click the button, they get this screen
"Your request to join the <GroupName>.groups.io Groups.io group has been submitted to the group managers."
Seems to me that the group name should be given in the email without ".groups.io" appended -- so that it is not converted by gmail into a link, which adds steps for the invitee and leads them off the track.
Perhaps that line in the invitation email could say something like this...
You have been invited by <OwnerName> to join <GroupName> on the Groups.io system, a modern platform for serious online communities.
Thanks for listening,