Sending a handwritten note to a client is a nice touch, whether after an introductory call:
“Such a pleasure to meet you; looking forward to exploring ways for us to support your Asia growth initiative.”
or at the end of a project:
“So pleased to hear that the Board approved the recommendations you presented….”
Having a stack of handsomely-designed correspondence cards (plus envelopes and stamps) on hand helps overcome the activation energy that this extra step of client service requires.
Moo.com makes beautiful 32pt cards, 4.13″ x 5.82″ (10.5 x 14.8 cm).