I already love this add-on and will likely use it more. The icon that shows up in email fields is so easy. My main gripe is that it takes a few minutes for the email to arrive, causing a moment of panic about whether it worked. Only one time did I experience that the relay email caused a purchase order form to malfunction. I trust Mozilla not to read the content of my email, but I would appreciate more information about the terms and processes of Amazon Simple Email Service. The link to their privacy policy from Mozilla's isn't really helpful enough, because I don't know what part is relevant for the service provision. I treat companies that "do" things with email with suspicion so Firefox Relay could differentiate itself more by emphasizing and explaining that it is indeed private and doesn't suck up or aggregate my private data (if that is indeed the case).