Imported from https://meta.trac.wordpress.org/ticket/4274
Created by @angelasjin:

WordCamp organizers can check in their dashboard to see when sponsorships are received, but sponsors do not currently get any notification unless the WordCamp organizers manually send an email.

It would help coordination between organizers and sponsors if sponsors received some notification that their sponsorship has been received, and it would be nice to include a thank you note!

Ideally, this notification wouldn't come from support@wordcamp.org, but would come from the respective WordCamp's official email address. This way, we help facilitate more communication between the organizers and sponsors.