Everything between your data and their doorstep.
Postmark is a full-stack mail channel: audience sync, creative, print logistics, postage, per-piece tracking, and attribution — one system, one per-piece price, zero operational overhead on your side.
Segmentation that speaks store
RFM filters, purchase history, LTV deciles, subscription status — the same audience logic you use in email, pointed at the mailbox. Segments stay synced; campaigns pull tomorrow's list, not last month's.
Per-piece personalization
First names, last products, unique one-time promo codes generated in your store, and per-recipient QR codes that resolve to tracked landing pages. Mail merge, grown up.
Design, included
Start from conversion-tested templates or brief our design team — real humans who've shipped thousands of cards. Print specs, bleeds, and postal clear-zones enforced automatically.
Address hygiene, invisible
CASS verification, NCOA move updates, dedupe, and suppression on every send. You never pay postage to a dead address, and movers still get your card at the new place.
Speed tiers per moment
Triggered rescues ship First-Class and land in 3–5 days. Campaigns ride Marketing Mail in 5–9. You pick the trade-off per flow; we handle classes, presort, and induction.
Doorstep telemetry
Every piece carries an Intelligent Mail barcode. Watch scans stream from press to postal facility to carrier route — and time follow-ups to the day cards actually land.
Matchback attribution
Orders match to mailed addresses inside your window, deduped against email and paid touches. Export-grade reporting your finance team can reconcile line by line.
Holdouts by default
One toggle reserves a randomized control group. Postmark reports incremental revenue — the orders that wouldn't exist without the card — not vanity correlation.
Prospecting audiences
Seed lookalikes from your best customers and acquire in the mailbox, where nobody is outbidding you. Modeled, suppressed against your file, refreshed monthly.
The unsubscribe button doesn’t work on the mailbox.
Match resolves the emails you can't legally or practically reach — unsubscribes, bounces, chronic non-openers — to verified postal addresses through licensed, privacy-reviewed data partners. Your list stops shrinking; your best offers reach whole cohorts email wrote off.
Licensed identity graph, CCPA/CPRA-aligned, opt-outs honored
Every match CASS-validated and NCOA-updated before print
Recent buyers and do-not-mail requests excluded automatically
Plugs into the stack you run.
Two-click OAuth for commerce platforms; secure file drop for everything else.
Customers, orders, segments, discount codes
Lists, segments, engagement signals
Full commerce sync
Full commerce sync
Subscription states & churn risk
Service context for VIP saves
6,000+ app triggers
Anything else, programmatically
Built by operators who got tired of renting reach.
Every digital channel is an auction that resets daily. The mailbox is the last place your message arrives alone, stays for days, and costs the same whether or not a competitor shows up. We built the software to run it with digital discipline — and the print network to make it effortless.