Not Receiving Emails - To My Comcast Email Address - From Multiple Email Addresses

I have done the safe senders list, gone through all forums, gone through all settings, none of it worked, that's not the issue. From what I'm reading in forums Xfinity may have spam restrictions imposed that prevent certain emails from coming through. I've already spent over 2 hours on your site. Look into my account and figure out why this is happening. There's a prevalent problem I see in every forum post regarding email issues....there's never a resolution and everyone keeps saying the same thing. I want this resolved or I'm leaving Comcast this email is useless if you can't fix it. 

Also, I've been with Comcast for 10 years and had my email for 10 years. When I checked email today, I only have 256 emails in my inbox that go back to 05/07/25. So after 10 years, I only have access to 2 months worth of my emails. We can all agree this is a disturbing actuality, I need an explanation to this as well, where did my emails go? I have very important information in there and it's just gone?

Please stand up for Xfinity and show that you can remediate issues for customers and not make me spend countless more hours dealing with this when it's your responsibility.