Writing Congratulations letter to our family, friends, colleagues, business associates on various occasions like birth, wedding, graduation, on getting job or promotion, etc. is very welcoming and appreciative. It expresses feelings of love, care, friendship, affection and happiness in the well being and prosperity of the recipient.
Writing Congratulatory Letters to total strangers is very weird. Congratulation letters must be warm, sincere and should convey genuine feelings of happiness. They should hope for providential blessings for the grant of many more such happy occasions in the future. The letter should also include the full address of the sender to send a ‘Thank You Letter’, if the recipient wishes to write.