I'm not a "peeps", which is a dergatory term to my generation, but can tell you that in large, long term groups at yahoo, about 20% or more end up in bouncing status.
Yahoo has an ever changing requirement for Yahoo email owners to post at least every (delta) days/weeks or they arbitrarily disable the email account. They don't bother to tell group owners when they do this so, one must access all members and sort for bouncing members because they will not be imported by groups.io.
Just consider them lost forever.
Also I've had people try to rejoin 2 or 3 times when they were already active members.
You just can't have a large group and at the same time baby sit them.? They either need to become active for themselves or fall by the wayside.
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Bob Bellizzi
The Corneal Dystrophy Foundation
