So I sent it... No turning back now.

I e-mailed the letter out.  One round to my Dads family at about 3PM and another one about 15 minutes ago to my Moms family, our friends and DH's family.  So far I received one response.  It was from my younger sister who is actually the one that prompted the letter in the first place.  It was a very positive response and she told me that she knows we will make great parents.  I'm not sure what to expect, but I will let you all know!