System and method are provided where parcels or packages are associated or grouped, into logical group or logical containerization of parcels or packages, without need for physical container, such that parcels or packages can be tracked as a group, for example with a unique group ID. Logical group may be tracked within specified logical zone on conveyor, transported, sorted and/or otherwise processed as unique logical group without need to be contained in physical container. System and method for automated sortation can accumulate set number or set volume of packages, and then process the accumulated set number or volume of packages.