I was very happy to learn that …
I was very delighted to hear the news that…
It is with great pleasure that I hear of your success. Please accept my warmest/heartiest congratulations(最衷心的祝贺).
Allow me to convey my congratulations on your promotion to …
How time flies! Here you are graduating from high school and planning to attend the university in the fall. Congratulations on a job well done, and good luck to you during the next four years of university.
Wish you good luck!
I wish you success and fulfillment in the years ahead.
Happy New Year to you and may each succeeding year bring you greater happiness and prosperity.
Dear Mr. John,
Just a note to wish you a very happy new year. May the new year bring you joy, love and peace. My memory of you is one of the most delightful experience I have ever had. I would very much like to continue our friendship.
As another year draws to close, it gives us great pleasure to say how much we have appreciated(感激) working with you over the past twelve months. We sincerely hope that our pleasant business relationship will continue for years to come.
Our staff here join me in wishing you a very Merry Christmas and a Happy Prosperous New Year.