Peel and dice your mangoes, removing the pit. Place the mango chunks in a blender or food processor and blend until completely smooth, scraping down the sides as needed.
In the same blender, add the coconut milk, honey (or maple syrup), lime juice, vanilla extract, and salt. Pulse to combine with the mango purée until the mixture is silky smooth.
Taste your mixture and adjust sweetness or acidity as needed, keeping in mind that frozen treats taste less sweet when frozen.
Pour the mixture into your popsicle molds, leaving about ¼-inch space at the top to allow for expansion. Tap the molds gently on the counter to remove any air bubbles.
Insert popsicle sticks and freeze for at least 6 hours, preferably overnight, until completely solid.
To unmold, briefly dip the popsicle mold in warm water for 10-15 seconds, then gently pull the popsicles out by their sticks.