Dear @Mailman:
Just a quick note to wish you a happy birthday and a fun, safe and healthy day with your family and friends. As everyone gears up for the holiday season, I'm sure you'll be thinking of your former colleagues at work.
Pete
Happy Birthday Bob! May you have many more to come.
Happy Birthday Bob with age comes maturity I think
Happy Birthday Bob! Hope you have a great day! Vic
....and many more!
Happy birthday Bob! Enjoy your day!