In a blender, combine diced mango, yogurt, and a pinch of salt. Add a small amount of orange juice or water and blend until smooth and somewhat thick. You are looking for a smoothie-like consistency. If needed, add more liquid.
Pour the mango mixture into popsicle molds, filling each mold about 1/2 full.
Spoon 1-2 teaspoons of strawberry jam on top of each mango-filled mold.
Carefully add more mango mixture to the top, leaving space for a bit more jam. Top with another 1-2 teaspoons of jam.
Insert popsicle sticks into the molds.
Place the molds in the freezer and freeze until solid, usually for about 4-6 hours or overnight.
Once frozen, run the molds under warm water for a few seconds to loosen the popsicles. Carefully remove them from the molds.
Serve immediately.