Email is not very integrated with all the web based media services. Try sending a YouTube link or spotify song with moped. Or arrange a meet by inserting foursquare venues.
Email = lots of noise, lots of messages from companies. Moped is just for people.
You can filter out the noise easily e.g. whitelist desired senders, other messages go to secondary inbox. That way you don't have to make separation by sender type but by preference.