Postcard campaigns for Shopify: audiences, costs, and timing

A postcard campaign is the simplest thing in direct mail: choose some of your customers, design one card, and mail it to all of them. No triggers, no flows — a deliberate, one-time send. This guide walks the four decisions that make one work: who, what, where-to, and how much.

1. Who — the segment is most of the result

Campaign performance is decided mostly before design begins. Four segments cover the classic plays:

• Best customers (lifetime spend above a bar) — thank-yous, early access, new-product announcements. Warmest audience, highest response.
• Bought a specific product — a companion product launch, a restock note, care tips. Relevance does the selling.
• Gone quiet (no order in 90+ days) — the win-back. Response runs lower, so the expected value math matters more here.
• Everyone mailable — big announcements only. The broadest segment and the easiest way to spend without a thesis.

Hygiene the tool should do for you: skip addresses that can’t receive US mail (and never bill them), and collapse two customers at one address to a single card. You want to know exactly how many cards will print before agreeing to anything.

2. What — the card itself

One idea per card. A headline a passerby understands in two seconds, a sentence or two of warmth or reason, and a single action. Upload finished artwork if you have a designer (meet the print specs) or use a clean template; either way the back should carry a QR so the response is one scan, not a typed URL — and so responses are measurable.

3. Where — the destination

Send scanners somewhere that matches the card’s promise: the featured collection, the sale page, the new product. A generic homepage landing wastes the momentum the card built. The QR should be per-recipient, so you can count responses without asking anyone to type a code.

4. How much — decide the cost before, not after

The correct moment to see the price is before scheduling: cards × per-card rate — one flat rate, printing and postage in it — on the review screen. Combined with a cancel window — nothing printed, nothing billed for 24 hours — a campaign becomes a decision you can sleep on rather than a lever you pull nervously. That’s the difference between mail feeling like a tool and feeling like a bet.

A first-campaign recipe

1. Segment: customers who’ve spent $100+ all-time.
2. Card: a plain thank-you — no discount, no ask beyond “scan to see what’s new.”
3. Destination: your newest collection.
4. Review the exact cost, schedule it, sleep on it.

Then read the scan numbers, and only then decide the second campaign. Campaigns are also how most stores discover which segments respond enough to justify automating the whole motion.