Add the mango, ice, tequila, lime juice, and simple syrup to a blender jug and blend until smooth. Serve right away.
For Optional Garnish
To rim the glass with salt or Tajin wet the rim of the glass with lime juice or water. Sprinkle kosher salt or Tajin on a plate. Roll the wet rim of the glass in the salt or Tajin to coat as much as you like. Add a lime wedge to the top of the glass if you like.
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Notes
Don't have gold tequila? Use silver tequila.Want a more classic margarita? Add half a shot of Triple Sec.Don't want to use simple syrup? Try agave syrup.Don't have fresh limes? Use bottle lime juice for this blended margarita instead.