There could be more cryptocurrency options
Users can already pay by Bitcoin. However Bitcoin isn't the most private nor cheapest cryptocurrency to use. I suggest Proton paid plans could be paid with other cryptocurrencies such as Monero, Litecoin, Etherium and Bitcoin Cash.
Siglo XIX commented
Why not just convert those to Bitcoin? Why should they waste time adding massive security holes to the system because you are too lazy to use an exchange?
Would pay using crypto if Cardano was supported.
I propose proton a change in plan payment metode, yes disable bitcoin payment, accept only anonymous transaction as bitcoin liighting, Dash, Zcash, Pirate arrr, Monero, Horizen, Verge, Beam, Internet computer, Oasis network, Zano, Firo, Ergo....and so on...Check list#Coinmarketcap
We really need a monero option. Cheap and private.
We definitely NEED this! Especially with Monero.
J A commented
They know people want to pay privately but they've been intentionally ignoring requests for 5 years: https://protonmail.uservoice.com/forums/935538-accounts-payments/suggestions/33188971-accept-monero-for-payment