When you have a new entrant in your family, you want to share the moments of happiness with others. You want to share the news that your bundle of joy has finally arrived with all the near and dear ones! Even in the office you need to inform. Here is a sample e-mail you can refer to for informing your team mates.
It gives me immense pleasure to inform you that I have been promoted...from a husband to a father. We are blessed with a baby boy yesterday. Both mother and the new entrant in our family are doing absolutely fine.
I am happy to be in the daddy club.
(Write your name)