Make the mailbox your best-performing channel.
Postmark turns postcards, handwritten notes, and catalogs into a channel you can run like paid social — triggered by your store data, delivered to real hands, and matched back to revenue, dollar for dollar.
- No minimums
- Print + postage included
- No spam folder. Ever.
We kept it warm.
Retention teams run their mailbox on Postmark
Email-simple. Mailbox-effective.
Everything between your customer data and their doorstep is our job. Yours takes about four minutes.
Sync your store
Connect Shopify or Klaviyo in two clicks. Customers, orders, and segments flow in and stay fresh — addresses verified and deduped automatically.
Pick a playbook
Launch a proven flow — winback, abandoned checkout, VIP — or build your own audience with the same filters you'd use in email.
We print & mail
Approve the creative and we handle everything physical: printing, addressing, postage, and induction into the mailstream within 48 hours.
Watch revenue land
Delivery scans stream in live. Orders match back to mailed addresses — with holdout groups proving the lift is real, not coincidence.
Automations that run while
the ink dries.
Set the trigger once. Postmark watches your store, prints the moment a customer qualifies, and keeps mailing until the numbers say stop.
Winback
Catch customers at 60, 90, or 180 days lapsed — the window where a postcard outpulls every reactivation email you've ever sent.
Abandoned checkout
A physical nudge for high-value carts. Ships First-Class within a day, lands while the tab is still open in their head.
VIP thank-you
Handwritten-style notes to your top 5%. The cheapest thing you'll ever do that customers photograph and post.
Replenishment
Time the reorder reminder to the empty bottle, not the email calendar. Consumables' quiet compounding machine.
New drop announcement
Launch-day saturation for your buyers — a 6×11 in the mailbox beats a subject line in a crowded inbox.
Sunset saver
One beautiful goodbye card before you write the cohort off. Regularly pays for the whole month's postage.
Paper, engineered to convert.
Premium stocks, soft-touch coatings, color-managed presses. Every format ships with templates sized, bled, and postal-compliant out of the box.
The workhorse. Triggered flows, quick offers, replenishment taps.
Twice the canvas. The winback and launch favorite.
Fills the mailbox. Impossible to shuffle past.
Real pen, real envelope, 99% open. For moments that matter.
8–24 pages, perfect-bound feel. Coffee-table retention.
Your list is bigger
than your reach.
Unsubscribed. Bounced. Never-opens. On most lists that's a third of the file — revenue email is never getting back. Match resolves those contacts to verified postal addresses, privacy-reviewed and deliverability-checked, so your best offer still arrives.
- Email-to-address resolution on licensed, consented data
- CASS-verified, NCOA-updated before a single card prints
- Automatic suppression: recent buyers, opt-outs, movers
Finally, mail your CFO
can audit.
Every order matches back to a mailed address inside your attribution window — deduped against email and ads. Randomized holdouts show the revenue you'd have missed, so 'it works' becomes a line item, not a vibe.
Reserve 5–10% of any audience as a randomized control. Postmark reports incremental revenue — mailed minus holdout — not just correlation.
- Pieces delivered
- 8,214
- Cost (all-in)
- $6,900
- Matched orders
- 782
- Matched revenue
- $61,240
- Return on send
- 8.9×
Run your numbers before
you run a campaign.
Illustrative model at $0.89/piece all-in (print + postage + tracking). Your matchback report replaces this math with real numbers after your first send.
The channel nobody's
bidding against you on.
We treat Postmark like a paid channel with a fixed CPM and none of the auction chaos. Winbacks that email couldn't touch came back at 8× — and the holdout proved it wasn't luck.
A third of our list is legally unreachable by email. Postmark Match turned that dead file into our second-best retention channel in a quarter.
The dashboard reads like our ad manager — spend, revenue, ROAS per flow. Finance stopped asking whether mail 'really works' after the first matchback report.
Prototype personas — illustrative
Pay for stamps, not seats.
Per-piece pricing with print, postage, and tracking included. Plans just make the pieces cheaper and the tooling deeper.
Lower unit costs, full automation flows, Postmark Match, holdout testing.
Start ScaleFull per-piece rate card on the pricing page.
Fair questions.
How fast do cards actually arrive?
Standard campaigns print within 2 business days and typically deliver in 5–9 days with USPS Marketing Mail. Triggered sends (like abandoned checkout) ship First-Class and usually land in 3–5 days. Every piece carries an Intelligent Mail barcode, so you can watch delivery scans in real time.
What does it cost? Are there minimums?
You pay per piece — printing, postage, and tracking included. Postcards start at $0.59. There are no minimums, no contracts, and no setup fees: send 50 cards or 500,000. Volume and plan discounts apply automatically. The full rate card is public — every format, every plan, no call required.
How do you prove it works?
Two ways, both built in. Matchback: we match orders back to mailed addresses within your attribution window, deduplicated against your other channels. Holdouts: every campaign can reserve a randomized control group, so you see true incremental revenue — not just correlation.
Do I need my own designer?
No. Start from proven templates, use the built-in editor, or have our design team produce campaign creative for you — included on paid plans. Print-ready specs are enforced automatically, so nothing ships blurry or mis-cut.
Where do the addresses come from?
Your customer file, synced from Shopify or Klaviyo, is the core. Postmark Match resolves emails you can't reach to verified postal addresses via privacy-reviewed licensed data. Every list is CASS-validated and NCOA-checked before printing, so you don't pay to mail stale addresses.
Is direct mail even legal for my unsubscribers?
Yes. Email opt-outs govern email under CAN-SPAM; postal mail operates under separate rules. We maintain suppression lists, honor do-not-mail requests automatically, and follow DMA guidelines — so you stay compliant while reaching customers email can't.
The inbox is rented.
The mailbox is yours.
Connect your store, pick a playbook, and put your brand in real hands this week. First 50 cards are on us.