mail day

plural mail days · alternative mail-day

1. The scheduled day when mail is delivered.

   There was nothing, scarcely, that he did n't send out from town, and Jimmy Mulcahy and old Anderson have many and many times since then borrowed our dray. Now Dad regularly curses the deeds every mail-day, and wishes to Heaven he had never got them.

   1903, Steele Rudd, On Our Selection, Chapter 3

   1 more example

   Their captains were the finest men whose services money could secure, and to their care were entrusted the lives of eminent men and women, government despatches, the mails and specie. Rain or shine, blow high, blow low, one of the Black Ball liners sailed from New York for Liverpool on the first and sixteenth of each month, and for many years these were the European mail days throughout the United States.

   1911, Arthur Hamilton Clark, The Clipper Ship Era 1843-1869, Chapter 3