Just paid for 2 years of @ProtonMail Unlimited using shielded Zcash Wait, but aren’t the Proton guys a bunch of toxic bitcoin maximalists? How is this even possible? Well, I’m glad you asked: @zashi_app has a “pay” feature that effectively swaps your shielded ZEC for BTC, ETH, stablecoins, and lots of other crypto assets. So basically you pay with your shielded ZEC, and Proton Mail receives BTC from a wallet that isn’t even yours. This is what real DeFi looks like.