My grievances with Proton

banana:

And let’s not forget that it costs them nothing to maintain those aliases!

Says who? How does a system that relays emails could cost nothing?

banana:

if you decide to downgrade your plan to the Free plan, your aliases will be deactivated until you become a paying customer again. Which is to say that Proton will essentially hold your online accounts for a ransom, from my perspective.

Are you saying that other similar aliasing services don’t do the same?