Gmail account users...until the admins convince google our site is not a Spam source, the solution below will generally allow the email notifications to come thru. Add the website as a Contact in your email.
Open your gmail account, go to Contacts, Add New Contact, then choose More, lower left corner...
Using the Company field, create a Contact labelled as 67-72chevytrucks.com
Scroll down to the website field and add
https://67-72chevytrucks.com/
Save the Contact and log out of gmail...
Hope this helps