A method for feeding blanks (2) to a boxing machine (AS), includes picking up, one by one, groups (20) of blanks (2) in flat configuration from a support surface and transporting, one by one, the groups (20) to a line (1) for continuously feeding the blanks (2) to the boxing machine (AS) in a predetermined forward movement direction (A). The transport step includes releasing each group (20) of blanks (2) between two adjacent prongs (13) defining a pocket (V) of a horizontal pocket conveyor (10, 11) of the feeding line (1). The releasing is performed by depositing the group (20) onto receiving and supporting means (23), which move from and to the conveyor (10, 11), in a direction crosswise to the forward movement direction (A), between a position, in which the receiving and support means (23) are slightly raised with respect to the surface (P), defined by the feeding line (1), and a position, in which the receiving and support means (23) are slightly lowered with respect to the surface (P), and a subsequent moving of the receiving and support means (23) from the raised position to the lowered position.