Meetup suffers from a similar issue, where one cannot perform bulk changes to all the subscribed groups, which becomes unwieldy when one has over 100 subscribed

Meetup suffers from a similar issue, where one cannot perform bulk changes to all the subscribed groups, which becomes unwieldy when one has over 100 subscribed groups. Apart from this, it happened just a few months ago that these settings suddenly stopped working, so I received several non-solicited emails from notifications that should have been disabled. Issues like this could have a significant negative impact in user experience and retention, in my opinion