what is the reason, that there isn’t possible to have the same e-Mail-Adress for different subscriber? I can’t see any problems. but perhaps you can tell me why.
We use the newsletter for a club, where a hole family (each separately) can be a member. In WP-User we allow multiple use of the same e-mail-adresse (e.g. children without one e-mail-adresse).I take the subscribers inkl. e-mail-adresses via WP-User to newsletter.
Tx for your reply.