One way to reach out to your current customer base is to write thank you letters. A letter of gratitude shows your customer you are glad they gave you their business. This website has more information and some sample letters: http://www.serviceuntitled.com/sample-client-thank-you-notes/2007/05/04/. On the other side of the spectrum, grateful customers may wish to write businesses a letter. A
. letter from a happy customer can have great impact on the direction of a business, for example, compelling them to retain a specific product because it is popular amongst customers.
