MELISSA, Texas – The U.S. Postal Service will soon open two air-conditioned, modular units in Melissa, Texas, to store mail its post office does not have room to contain. For two years, Melissa’s postal workers have sorted mail under tents in the office’s parking lot. Until the parcels and packages are ready for delivery, they sit by the curb. The town has outgrown its brick-and-mortar facility.