Most of the manufactures offer a solid service for post sale communications - by email, text, mobile app and now several of your luxury brands offer communications and alerts via the vehicles OS through the media player . Mercedes-Benz has a solid out-of-the-box service for post sale comms through all 4 channels of communication. Post sale communications for service reminders, recalls, parts & accessories, finance and ext. warranty, lease/finance end. Communications outside of that, (birthday, anniversary, referrals) I believe should be coming from the sales rep and/or management.
