Direct Mailroom Home |  Example   |  How to Send a Campaign  |  Contact Manager Example   A thank you card could be sent by you to your customer after they have purchased from you or after you have showed them a property. A thinking of you card could be sent if you find a property for a client or as a follow up or reminder. Holiday card sent to your customer to show them you are thinking about them during the holidays. Referrals are a great way to get new clients. A thank you card is a great way to show you appreciate the referral.