Hotmail has very strict security protecting their users. Sometimes the emails get placed into spam or junk folders but often times your users will need to add email@example.com to their white lists or simply allow all emails from Scoutbook.com.
ADDING TO A HOTMAIL / MSN MICROSOFT WHITE-LIST
1. Sign in to your account. Go to inbox.
2. Click Options located at the upper-right side of the page.
3. Select More Options.
4. Under Preventing junk email, click Safe and blocked senders.
5. Click Safe Senders.
6. In the text box, type in the email address firstname.lastname@example.org or add the entire domain scoutbook.com then click Add to list >>.