Come back — $20 off a full detail, just for you.
Start Free — No Credit CardReactivation — 3 waves, 8 weeks, 90-day rest cycle
Come back — $20 off a full detail, just for you.
First month free — no commitment.
$20 off a detail or first month of unlimited free.
Four design styles, all themed for auto detailing and car-wash memberships and ready to customize. Same offer, same call follow-up — just pick the look that fits your brand.
Bold
Photo
Minimal
Gradient
Front Detail
Back (Address Side)
Wave timing, call scripts, and postcard copy are pre-configured for auto detailing and car-wash memberships.
Export your customer list as a CSV. Our import wizard auto-maps name, address, and phone columns.
Postcards mail automatically via USPS. Your call queue populates a few days after delivery. Non-responders advance to the next wave.
Call scripts are pre-loaded. Log outcomes, flag warm leads, and let the sequence run itself.
Say you have 600 customers to reach. Here's what a PostKnock campaign looks like:
That's a 8:1 return on a $1,422 investment.
Free to explore — you only pay when you're ready to send. 30-day money-back guarantee.
Single-wave postcard campaigns · Unlimited contacts · From $1.05/piece
Everything in Free + calls, sequencing · From $0.79/piece
PostKnock also works for
PostKnock postcards start at $1.05 per 4x6 card on the Free plan and drop to $0.79 on Pro. No setup fees, no minimums, no contracts — you only pay for what you send.
The most effective cards lead with a clear offer ($20 Off a Full Detail), your business name and phone number, and a QR code to book online. PostKnock templates include all of these with smart fields that auto-fill each recipient's name.
Yes — direct mail gets far higher response than email (postcards have a 100% open rate, no inbox to ignore). Adding a phone follow-up call after delivery lifts response further, which is exactly what PostKnock automates.
About 30 minutes from signup: upload your customer list as a CSV, pick the pre-built playbook, customize the offer, and click Launch. Postcards mail via USPS First-Class within 1–2 business days.
Yes. Pro is $99/mo (or $799/yr). Cancel anytime from Settings → Billing; you keep Pro features until the period ends, then revert to Free. No contracts or cancellation fees. Annual plans include a 30-day money-back guarantee.
A single touch rarely converts. PostKnock runs a 3-wave sequence — a postcard, then a follow-up call after delivery, then another wave for non-responders — so customers who ignore the first touch still get reached.
Stop sending postcards and hoping. Start sending postcards and calling.
Start Free — No Credit Card1 ANA (Association of National Advertisers), Response Rate Report 2023, published February 2024.