Method for improved processing of mail items, wherein, in a case of a delivery, a mail item is delivered from a sender to a recipient with the aid of at least one logistics service provider, wherein, in a case of return, the mail item is delivered to the sender with the aid of at least one logistics service provider, wherein the sender defines a place of dispatch, wherein the recipient defines a place of receipt, - wherein, in the case of delivery, a transfer of the mail item by the sender to the logistics service provider takes place at the place of dispatch in a first method step, - wherein, in the case of delivery, the mail item is transported in a second method step taking place at a time after the first method step, - wherein in the case of delivery, the mail item is handed over to the recipient at the place of receipt in a third method step taking place at a time after the second method step, - wherein, in the case of return, the mail item is delivered to the sender at a time after the first step, wherein a database is provided that can be accessed and/or amended at least in part for the sender, the logistics service provider and the recipient, - wherein a location information is stored in the database, which specifies a variant of the place of receipt from at least one first variant and one second variant of the place of receipt, and a first amendment of the location information is generated with an amendment carried out during the second method step on the part of the recipient or on the part of the sender and the first amendment information is transmitted to the logistics service provider during the second method step and/or - wherein a location information is stored in the database which specifies a variant of the place of receipt from at least a first variant and a second variant of the place of receipt according to a delivery rule, and wherein the first or second variant of the place of receipt is applied depending on the occurrence of a condition of the delivery rule during the second method step, and/or - wherein a delivery information referring to the applicability of either the case of delivery or else the case of return is stored in the database and wherein a second amendment information is generated with an amendment of the delivery information carried out during the second method step on the part of the recipient or on the part of the sender and the second amendment information is transmitted during the second method step to the logistics service provider. - wherein, in the case of delivery, a transfer of the mail item by the sender to the logistics service provider takes place at the place of dispatch in a first method step, - wherein, in the case of delivery, the mail item is transported in a second method step taking place at a time after the first method step, - wherein in the case of delivery, the mail item is handed over to the recipient at the place of receipt in a third method step taking place at a time after the second method step, - wherein, in the case of return, the mail item is delivered to the sender at a time after the first step, wherein a database is provided that can be accessed and/or amended at least in part for the sender, the logistics service provider and the recipient, - wherein a location information is stored in the database, which specifies a variant of the place of receipt from at least one first variant and one second variant of the place of receipt, and a first amendment of the location information is generated with an amendment carried out during the second method step on the part of the recipient or on the part of the sender and the first amendment information is transmitted to the logistics service provider during the second method step and/or - wherein a location information is stored in the database which specifies a variant of the place of receipt from at least a first variant and a second variant of the place of receipt according to a delivery rule, and wherein the first or second variant of the place of receipt is applied depending on the occurrence of a condition of the delivery rule during the second method step, and/or - wherein a delivery information referring to the applicability of either the case of delivery or else the case of return is stored in the database and wherein a second amendment information is generated with an amendment of the delivery information carried out during the second method step on the part of the recipient or on the part of the sender and the second amendment information is transmitted during the second method step to the logistics service provider.