How many people didn't get the tag email?

Dave said some bounced back to him. This is from the gotight facebook page regarding the email problems some had:
I sent out the email containing the download info for this week's TAG. Several emails were kicked back and I tried to resend to everyone. If you have a tough SPAM filter please whitelist Dave(at)gotight(dot)net so you will not have issues getting the emails in the future. If anyone did not get the email please let me know so I can get you the information you need.