We get deluged with emails because from campaigns’ point of view, it’s a numbers game: they contact a zillion people, a small % donate, and that’s how they hit their fundraising goals and fund their work. And no individual campaign has an incentive to scale back.

IMO, if you (general “you”) despise these emails and will never donate based on an impersonal yet breathless email about how democracy dies TONIGHT unless you send $10 RIGHT NOW to Candidate You’ve Never Heard Of… …then it doesn’t hurt you or the campaigns to block them en masse.