What You'll Actually Send
Four design styles, all themed for martial arts and ready to customize. Headline front, offer back — just pick the look that matches your studio.
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Kids trial class promotions, belt promotion family days, and lapsed-student win-backs. Pre-built playbooks for BJJ, karate, taekwondo, and MMA.
Start Free — No Credit CardParents don't wake up Googling "karate near me" — they notice your card on the counter, hear it from another parent at school pickup, or remember it the week before back-to-school. A postcard with a clear kids trial offer that lands the right week (back-to-school, January, fall season start) does what no Facebook ad budget can: it puts your school on the consideration list at the moment a parent decides to enroll.
Kids Trial Class Acquisition — 2-wave neighborhood mailing — back-to-school + post-winter-break windows
"Free first 2 classes — ages 5–12." Photo of kids on the mat in your gi, simple offer, QR straight to the trial-class signup.
Front desk calls anyone who scanned the QR but didn't book. Pre-loaded script: "Saw you got our card — we have Tuesday at 4 with Sensei Mike, would that work?"
"How martial arts changed my son's confidence at school." Real parent quote, real kid in your school, photo of a belt promotion.
"2 free classes + free uniform with enrollment." Concrete add-on, expires in 14 days. After this, the contact moves to the dormant list.
Four design styles, all themed for martial arts and ready to customize. Headline front, offer back — just pick the look that matches your studio.
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Choose "Kids Trial Class Promotion" or one of the variants. Wave timing, copy direction, and front-desk call scripts come pre-configured.
Bring your own student/member list (CSV from Mindbody, Mariana Tek, Punchpass, your CRM) or pick a 3–5 mile radius around your studio for new-mover and acquisition campaigns.
Postcards print and drop into USPS within 1–2 business days. QR scans drop into your call queue. Subsequent waves schedule themselves.
Pre-loaded scripts. Log call outcomes. Booked clients drop back into your studio software and the cadence retires the contact.
Back-to-school and post-winter-break are the two highest-intent windows for parents enrolling kids in activities. Mail 1,500–3,000 households within a 3-mile radius the week before each. Highest single-source acquisition channel for most schools.
Quarterly belt promotions are your best member-retention asset. A postcard 2 weeks before the ceremony invites the whole family (siblings, grandparents) and quietly seeds the next enrollment.
Kids who stopped coming for 30–90 days get a postcard offering a complimentary private with their original instructor. Catches them before parents officially cancel.
Adding adult BJJ fundamentals, kickboxing fitness, or women-only self-defense? A postcard to your kids parents (yes, parents) is the highest-converting list you have.
A typical school mailing 2,000 households within 3 miles the week before school starts. Here's what one PostKnock 2-wave acquisition campaign looks like:
18:1 ROI — and these students will bring siblings and friends.
Run your own numbers in the ROI calculator.
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
Per-piece pricing includes printing + USPS First-Class postage. Full pricing details →
PostKnock also works for
Specific martial arts campaigns
PostKnock martial arts postcards start at $1.05 per 4x6 postcard on the Free plan and drop to $0.79 on Pro. No setup fees, no minimums, no contracts. Pricing includes printing and USPS First-Class postage.
The two highest-intent windows are 1) the week before school starts (mid-August through early September depending on your district) and 2) the first two weeks of January. Parents are actively shopping kids activities during both. Schools that hit those windows typically see 2–3x the response of off-cycle mailings.
Photo of kids on the mat in your gi, an age range ("Ages 5–12"), a clear simple offer ("2 free classes"), your school name and phone, and a QR code to a trial-class signup. Avoid jargon: "BJJ rolling" and "kihon" don't mean anything to a parent who's never trained.
Most direct-mail list providers (Anchor, Lob's address verification + filters, even your local USPS EDDM tool) can filter to households with children under 18 within a radius. PostKnock supports both EDDM-style geo mailings and named-address campaigns from your existing student-family list.
Yes — especially when mailed to the whole family. Inviting siblings, grandparents, and aunts/uncles to belt promotions creates a ceremony moment that quietly enrolls the next student. Schools running quarterly family-day mailings see 15–25% sibling enrollment within 60 days.
Three days after the postcard mails, the front desk gets a queue of warm leads to call. Pre-loaded scripts cover the common parent objections: "I'm worried about contact," "My child is too shy," "How long is the trial?" Each call logs an outcome so the next wave knows whether to retire the contact, push the offer, or wait.
Yes. Each program (kids BJJ, adult kickboxing, women's self-defense) can have its own segment, branded postcard, and call script. Most schools run a kids-acquisition mailing twice a year (back-to-school, January) and a separate adults mailing once a year (New Year's resolution window).
Yes. Facebook ad costs for kids activities have climbed 3–4x since 2020 and reach has collapsed. A physical postcard in the right week with a clear kids trial offer cuts through the digital noise. Schools running PostKnock typically book 1.5–3% of mailed households into trial classes during peak windows.
Stop competing for shrinking Facebook reach. Mail the right neighborhood the right week and watch your trial calendar fill up.
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1 ANA (Association of National Advertisers), Response Rate Report 2023, published February 2024.