Why would anyone use this over Proton Mail or the gazillion alternatives if it treats people like shit.
They started putting ads in the mobile app a while ago. I think I first noticed a couple years ago? I had been using Inbox until that got shut down, then used the web UI for the most part. I've tried a few other app options, but the only one I like is $10/mo just for the UI. Not even a full email address, just a UI for Gmail.