A very helpful commenter on my post about- among other things- Red Envelope day responded with the following:
"The official red envelope count is 2.25 million sent on March 31 (confirmed by the White House mailroom). I am pretty sure 1 million were sent before the 31--that amounts to about 20,000 a day for the two months before March 31."
Wow! That's a lot of support for the pro life movement! Thanks to everyone who participated.