Slice the white peaches, orange, and lemon into thin pieces.
Add the fruit to a large pitcher.
Pour in the white wine, peach schnapps, and simple syrup.
Stir gently with a wooden spoon to combine.
Place the pitcher in the refrigerator for 2-4 hours to let the flavors blend.
Just before serving, add the club soda and stir once.
Fill wine glasses with ice and pour in the sangria.
Garnish each glass with fresh mint and fruit from the pitcher.