What is Trezor doing with the email contact list in the first place if it stays true to what Bitcoin (that made it) preaches?
Everyone is now crazy, they are only pretender who wants to gain from crypto one way or another, for I don't know why Trezor would demand an email. This is uncalled for in both payment and whatever reason they have, it is not an excuse, but selfishness. This is just like any other centralised system that wants to keep the customer on the hook.
Trevor is using the contact list to send updates of their products and services to their customers. How the emails are gotten is when users purchase their devices or subscribe to their newsletter. People who subscribed to their newsletter do it voluntarily, they do not have guns pointed at their heads. But if you want to buy their device, you may choose not to use your real email address.