In a large bowl or jug, whisk together coconut milk, coconut water, maple syrup, vanilla extract, and salt. Add chia seeds and whisk vigorously for 30 seconds.
Let sit for 10 minutes at room temperature, then whisk again to break up any clumps.
Divide evenly between four jars or airtight containers. Seal and refrigerate for at least 6 hours or overnight.
When ready to serve, dice mango and toss with lime juice and honey if using. Alternatively, blend mango with lime juice until smooth for a layered effect.
Check pudding consistency. Stir in a splash of coconut milk if too thick, or return to fridge for another hour if too thin.
Spoon mango topping over each jar. Garnish with toasted coconut flakes, fresh mint, and a drizzle of honey. Serve cold.