1. A method for migrating a plurality of mailbox accounts from a source messaging system to a target messaging system, comprising: configuring the source messaging system and the destination messaging system for migration of a plurality of identified mailbox accounts; obtaining credentials for accessing each mailbox account that is identified on the source messaging system for migration to the destination messaging system; dynamically obtaining computing resources for processing the migration of the plurality of identified mailbox accounts; dynamically associating the computing resources for processing the migration of the plurality of identified mailbox accounts; and employing the obtained credentials and the associated computing resources to migrate each identified mailbox account from the source messaging system to the destination messaging system, wherein the computing resources are dynamically associated for tasks employed in the migration.