If no fee is specified and there is no established postal agent (beit dvar) in town, from which day of the week is it permitted to send a letter with a non-Jew?

ShabbatShevut

Synopsis

Without a specified fee and without an established postal agent, the Mechaber prohibits sending even from Sunday. The Rema permits sending on Thursday or earlier, relying on authorities who hold that sufficient lead time before Shabbat eliminates the prohibition.

Early Acharonim
Late Acharonim
Lenient
Strict
Lesser cited
Major authority

Discussion

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