> Once someone has to make an active decision to contact you instead of just mass-spamming the entire school with a button press I guarantee nobody goes “Yeah, I really should call jacquesm and ask if he can bring coffee to the PTA meeting.
Instead, they make the decision to call you at 3:30pm to inform you that your child needs picking up asap today when they realise your kid hasn't been picked up yet, whilst every other parent found out about the need to arrange an earlier pickup in advance via the after school club's mailing list.
This may be more inconvenient than receiving a few irrelevant emails. Other stuff like being the only kid not in fancy dress or sports kit because nobody would ring you about that even if they were competent at handling the essential stuff may only be inconvenient for your child, of course.
Instead, they make the decision to call you at 3:30pm to inform you that your child needs picking up asap today when they realise your kid hasn't been picked up yet, whilst every other parent found out about the need to arrange an earlier pickup in advance via the after school club's mailing list.
This may be more inconvenient than receiving a few irrelevant emails. Other stuff like being the only kid not in fancy dress or sports kit because nobody would ring you about that even if they were competent at handling the essential stuff may only be inconvenient for your child, of course.