Regular mail service crucial to the well-organized community did not come to the Genesee Country until roads were sufficiently improved to permit the passage of mail stages. During the first years of settlement, mail service was casual and unreliable, the mail sometimes carried by ordinary traveller and sometimes by post riders under federal contract. As the region became more accessible, postmasters were appointed to receive and distribute mail within a given locality.

Canandaigua resident Gideon Granger, Postmaster General of the United States, did much to improve mail service in his native Genesee Country. Granger established the Brooks Grove Post Office in 1834. Mail reached Brooks Grove by stagecoaches plying between Mt. Morris and Nunda, N.Y. During the early years, service was infrequent, but it is said that on "post day," half the village would turn out for the distribution of mail.

Customarily, the village post office was located in the general store, with the storekeeper an officially appointed postmaster. Melissa Carrier, who was appointed postmistress at Brooks Grove in 1876, had difficulty getting about. Her neighbors moved her small store and post office (c.1834) back from the road and attached it to her dwelling — the 1835 Henry S. Jarvis House, now serving as the parsonage near Brooks Grove Church. After nearly a century together, the buildings were separated when moved to Genesee Country Village & Museum.