In effect anything from ONE upwards is defined as short run.
Every activity that generates unique pieces of direct mail that are individual to the recipient is short run.
Most clients tend to generally regard jobs as short run where the end quantity is less than several thousand. But there are projects across the world producing hundreds of thousands of unique pieces of collateral every week. If your target is in effect an audience of one, where the offer is bespoke, is addressed to a person and when there is something ‘personal’ about the item – that’s short run.
Only produce what you actually need, in most cases we can advise on prices really quickly so you can make a considered decision about what to produce.