Do you donate a % of MRR to charity?

It's something I've been planning to do for a while and I think now is the right time for Gaggle Mail.

Ideally, I'd have some content on the site saying we're donating and then at the end of every month we'd make the donation. Going forward we'd like to allow our customers to vote for which charity we support. Does anyone know of anyone who's doing this?

I know Stripe have a charity revenue sharing option which would be ideal. The only problem is that the charity is fixed and I'd like to choose specific ones (I wonder if Stripe is planning to extend this feature 🤔).