You can setup SiteBook to so that emails appear to be sent from your email address @ your company domain name.
The benefits are that you will receive any out-of-office replies, and any notification of undeliverable emails, (usually due to an incorrect email address) so you can fix and resend the email.
By default, emails sent from SiteBook are appear to come from firstname.lastname@example.org.
Here is how to change that:
Update Your Email Templates
Update your email templates, by changing the “From” and “Reply To” to your email address.
Remember to send a test email to yourself or someone you know, after making changes to templates or SPF records.
You should also read: How to improve your email delivery rate