29+ Happy Birthday Letter. Make your best friend’s birthday extraordinary this year with heartwarming happy birthday letters for friends. Easy, fun, and festive for any celebration!

We have a range of beautiful, heartfelt happy birthday letter & email samples that you can use to send warm wishes to your loved ones on their birthdays. Below are various birthday messages, emails, or letters that can be sent to your best friend or close friend; Happy birthday to my best friend!








