I enter about 30 email ids to invite to join to a group, and somewhere in between there is an email id already a member of the group, the invite doesn't go out saying
email@example.com is already a member
then I have to scroll through the email ids and remove this, then I click on Send
if there is another email id already a member, the whole thing is repeated.
It would be easy to just shoot out the invite and skip these member email ids.