I'm a free customer and I am always annoyed by ads in my inbox about other services provided by Proton. I signed up for an email box, I don't care about Proton Drive nor ProtonVPN. I chose Proton specifically because it supposedly had less or no ads at all, but it seems like Gmail continues to be the better choice.
Maybe this is disabled for free customers but at least for me there are settings to enable/disables what I kind of informations I'd like to receive from them.
Gmail in that regard I've always perceived as worse - every few months or so they update their policy, linking to some gargantuan document that I can't be bothered to read, each time wondering how much of my soul I've sold this time around...
