Freezing Canning Jars Can Low-sugar Fruit Preserves Be Preserved In Mason Jars Without Refrigeration Or Freezing?

Can low-sugar fruit preserves be preserved in mason jars without refrigeration or freezing? - freezing canning jars

I have an oversupply of backyard Golden plums. Recipes for plum jam, which is for me an obscene amount of sugar. I wonder if boiling sliced plums, edit a little sugar and the result in jars, then the jars in boiling water for 10 minutes, it will be enough to avoid being chilled? Not enough fridge and freezer rooms plum retains everything.