https://protonmail.com/about https://protonmail.com/about indicates they're funded to some extent by Charles River Ventures (https://www.crv.com/ https://www.cr

https://protonmail.com/about https://protonmail.com/about indicates they're funded to some extent by Charles River Ventures (https://www.crv.com/ https://www.crv.com/). They were initially crowdfunded, and also get funding from a Swiss nonprofit foundation.