Thyroid Gland: Located in the neck region, this post office handles mail related to energy levels and metabolism.
Adrenal Glands: Situated near the kidneys, these post offices specialize in urgent mail related to stress and emergencies.
Pancreas: Located in the abdomen, this post office manages sugar-related mail.
Ovaries/Testes: Found in the reproductive region, these post offices handle mail related to growth, development, and reproduction.