I buy canned diced tomatoes NO SALT ADDED because of my need for low or no sodium foods.
Welcome to my club Max Sutton. Go to the low sodium forum here and you will see that I started almost all of the threads. I found NSA Great Value Diced tomatoes to be 70 mg per can and Del Monte NSA is 150 mg. I think the same amount of fresh tomatoes diced is less then 10 mg. I am supposed to be on a 1200 mg or less low sodium diet. Any recipe you might want, just ask and someone (usually Mama) will help you.
I have been getting my low and no Sodium foods from healthyheartmarket they have great service and quick shipping