whitelist email address

Hi, spam deletes after 7 days so have lost this avenue to add the email back.  Tried  another means but misunderstood that to whitelist the email ,   It would block other incoming emails.

I entered the desired email into my address book successfully,  but think the Appfolio company has suspended access.  Trying to locate phone number to see if they can  

let me back into their system.   Dave

Thanks for reaching out and we are happy to dig into this to further assist with your email concerns. Can you please send us a DM with your full name and service address? Here's the detailed steps to direct message us: 
• Click "Sign In" if necessary 
• Click the "Direct Message" icon (upper right corner of this page) 
• Click the "New message" (pencil and paper) icon 
• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list 
• Type your message in the text area near the bottom of the window 
• Press Enter to send your message