All of my Beeminder goals are set to “Wrong Lane and Emergency reminders ONLY”, so I don’t get a huge quantity of emails from the Beeminder Bot, but it is still annoying having them clutter the inbox after I’ve resolved the beemergency. This is especially true for autodata goals where I don’t want to have to interact with Beeminder at all if I can help it.
Here is a script I wrote which automatically archives Beeminder Bot emails if the goal in question has data that’s newer than the nag email: https://github.com/DrTall/beebegone . I’m using it myself and it is great, but there is still some non-zero chance it will go berserk and archive all your emails or something. But it doesn’t request the delete permission, so there’s no way it can permanently eat your email.
PS: The idea is to run this as a cron job. Hourly should be fine.