Dear Mr/Mrs …
Dear Mr/Mrs XXX,Author: unknown
Together with you we have again achieved a lot this year.
Therefore it is now time to say a heartfelt thank you for the good cooperation and the trust placed in us! We look forward to working with you to build on the successes we have achieved in 20XX.
XXX wishes you a well-deserved rest and a happy time for the coming holidays. May the New Year fulfil all your private wishes and look forward to a promising new business year.
Your team of XXX