A machine-implemented method receives job specifications for a plurality of direct mail printing jobs from a user and automatically groups the multiple direct mail printing jobs into at least one campaign, using a computerized or processor-based machine. The machine automatically creates a plurality of workflows related to direct mail printing jobs within a campaign and transmits requests for bids on these job activities to entities (e.g., supply vendors) to allow the entities to bid on performing the job activities. The machine automatically selects winning bids on an individual job activity-by job activity basis from the bids received from the entities and combines the bids to provide cost and completion estimates for each of the workflows. The machine automatically combines estimates for the workflows to produce an overall estimate for the campaign. The overall estimate for the campaign is output to the user for review and approval.