The move_imap_users package comprises of two shell utilities to swiftly move the imap users between the divisions. balance.imap also load the balancing of users mainly based on obtainable space of the imap divisions. It shifts the users from the smallest obtainable space to the largest, unless a determined that there should be threshold in met. fast.imap also shifts the users from one division to another which comes in handy if you'd like to physically move a user to a dissimilar division.