This depends on what you mean. There are features (that many people find useful, even!) that depend on "mining your email for receipts". For example, I get push

This depends on what you mean. There are features (that many people find useful, even!) that depend on "mining your email for receipts". For example, I get push notifications that I have bill payments due, and flights and events that I register for are automatically added to my calendar. A similar feature, "trip bundles", which would group flight/hotel/car rental information for a logical single trip was available in inbox, and was one of the many features that inbox users complained about losing when Inbox was merged back into gmail. And of course, Gmail's business model doesn't really rely on mining your email receipts. Gmail data isn't used to target ads. So unless by business model, you mean the features, Gmail basically meets your requirements ;)