The Messenger of the Sacred Heart is a Roman Catholic periodical; the print organ of the Apostleship of Prayer, a pious association founded in nineteenth century France by the Jesuits.

[3] In 1884, Coleridge was able to pass the editorship of "The Messenger" to Augustus Dignam SJ, who also happened to be spiritual adviser to Frances Margaret Taylor, the former publisher of The Lamp.

In November 1887, Cullen was appointed director for Ireland of the Apostleship of Prayer, to spread devotion to the Sacred Heart.

The boatmen who carried goods between Enniscorthy and Wexford worked hard; it was there, Cullen first became concerned with men spending their money on drink.

[6] Helpful articles in the early days offered advice ranging from how to iron a blouse to the good rearing of hens.

[9] In 1947, The Messenger was banned in Yugoslavia, Albania, Austria, Latvia, Lithuania, Poland and Bohemia and Ruthenia in Czechoslovakia[10]