Focus on the pronunciation of mail drop
English definition of “mail drop”
mail drop (also maildrop)
noun [C] US COMMUNICATIONS
› an address used only to receive letters and packages to be picked up later: Many entrepreneurs have a prestigious office address that's really just a mail drop.
› a container that holds letters and packages until they are picked up: There is now a drive-by mail drop around the side of the building.
› a time when letters and packages are delivered: First thing in the morning I had a mail drop to sort and file.