Hello @JeffK450 ,
Here are some general best practices for deliverability.
Deliverability can have a lot of variables, from elements on our side, on your side, on the recipient's side, and in their email system company's side. I'd also advise setting up self-authentication for your emails since you have your own domain, since the ccsend authentication is meant more for free domains (Gmail, Yahoo, AOL, etc.)
If you'd like to learn more about safelisting, and what it entails:
If you're wanting more in-depth, specialized insight on your current deliverability, it'd be worth speaking with one of our Deliverability agents.