1. For senders not found in contacts show a corresponding icon for each message, indicating the mail address web domain: i.e. the icons of GMail, Yahoo, Hotmail, PayPal, eBay, Amazon, etc.
2. Also for messages from/to contacts, show contact's icon if found (I find the current one too large, especially in split view). If not, go to 1.
Very useful for finding emails at first glance, within an otherwise unfriendly, long list!
