You or your members enter a birthdate in WordPress or BuddyPress. This plugin automatically sends an email to such members on their birthday.
You can customize the email that is sent to all Users.
You can request a notification email be sent to you for each birthday email that gets sent, so you know it happened and when.
If you want to contact the author, write to clawrick@gmail.com
Birthday Emails is currently available in English only, though you can customize the birthday email sent, in any language you wish.