Worked example: the math, not a testimonial. We build these from third-party industry benchmarks (USPS, ANA, JICMAIL) and PostKnock's real pricing, then show every number so you can run your own. Business names and exact figures are illustrative; results vary by market, list quality, and offer.

Insurance · Composite Case Study

Insurance Auto-Policy Renewal Recall: 11.4% Re-Quote Response on 350 Policies

Updated May 2026 · 7 min read

Business profile (composite)

Practice / Shop

Cardinal Insurance Agency

Market

Suburban Columbus, OH, 1,200 active policies in book

Size

1 agent, 1 CSR, $310K annual revenue (commissions + bonuses)

The challenge

Cardinal Insurance Agency was an independent shop representing 11 carriers across personal auto, home, and small commercial. Auto-policy retention was the agency's primary churn surface: when carriers raised rates at renewal (which happened often in 2025-2026 inflation cycles), policyholders shopped competitors, and roughly 18% of auto policies churned each year. The owner's CRM showed 350 auto policies coming up for renewal in the next 60-90 days.

The standard renewal flow was a carrier-mailed renewal notice (often with a 12-22% premium increase in the current cycle), followed by the customer either (a) accepting the increase silently, (b) calling Cardinal to complain, or (c) shopping the policy with a competitor's quote tool and silently leaving. The owner had no proactive system to surface customers in window (b) or (c) before they walked.

Insurance renewal-proximity campaigns are unusual in the direct-mail world because the response rate ceiling is high (8-15% for an existing-customer recall) but the value proposition has to be carefully framed. Customers don't want to feel actively churned by their own agent; they want to feel served. The campaign needed to convert renewal anxiety into a re-quote conversation that retained the customer rather than scared them off.

The PostKnock approach

Playbook used: Insurance: Auto Policy Renewal Reminder

We deployed PostKnock's Insurance: Auto Policy Renewal Reminder playbook configured for independent insurance agency workflows. The 350 auto-policy renewal list was segmented by tenure: 1-2 year customers (140), 3-5 year customers (120), and 5+ year loyalty customers (90). Each segment got a slightly different creative tone: newer customers got a value-prop reinforcement, longer-tenure customers got a relationship-affirmation tone with a softer re-quote CTA.

Wave 1 was a single 6x9 postcard (no Wave 2, renewal windows are narrow) with a personalized line referencing the customer's renewal date and current carrier. The headline framed the offer as service: "Your auto policy renews [date]. We can re-shop the market before your renewal hits, no obligation, free 15-minute review." The card included a QR code linking to a callback-request form and the agent's direct line. The carrier-name mention ('Geico/Progressive/State Farm') in the personalization was a deliberate authenticity signal: generic "your insurance" reads as boilerplate.

The CSR worked Wave 1 non-responder calls in 30-minute batches between policy-servicing tasks. The script was service-oriented: "Hi, this is Linda at Cardinal: your auto renewal hits next month and the carrier rates have shifted, just wanted to offer a free re-shop before you see the renewal notice." Total: 350 pieces, ~140 outbound calls, 10-week campaign window.

Campaign timeline

Week 0
CRM export, 3-tenure segmentation, carrier-name personalization setup.
Week 1
Wave 1 drops (350 cards). Carrier-name + renewal-date personalization.
Week 2-3
Inbound responses: 32 re-quote conversations scheduled.
Week 4-5
CSR runs follow-up calls. 95 dials, 48 connects, 8 incremental re-quote conversations.
Week 6-9
Re-quote workflow. 18 of 40 customers shifted to a different carrier with lower premium.
Week 10
Final tally: 40 re-quote conversations, 18 carrier-shifts, 22 retained at original carrier.

Results

Response rate

11.4%

on 350 pieces

Conversions

40

48 calls connected

Revenue

$9,600

first-attributable

ROI

11.0x

on $870 cost

Forty re-quote conversations on 350 auto-policy holders is an 11.4% response rate: a realistic outcome for a proactive, existing-customer renewal campaign, where mail to your own list gets read far more often than mail to strangers. Of the 40 conversations, 18 resulted in a carrier shift (typically saving the customer $180-380 annually and earning Cardinal new-business commission of $240 average per shift = $4,320), and 22 customers re-confirmed their existing policy with refreshed coverage discussion (retention value averaging $240 per saved customer = $5,280 in retained-premium commission that would have churned). Total attributable value: $9,600.

Campaign cost ran $870: $210 in postcards (350 at $0.60), $99 in Pro-month plan, and $561 in CSR follow-up labor. ROI of 11x is high but reasonable for a renewal-proximity recall. These are existing customers with active relationships, and the campaign converts a passive renewal moment into an active re-engagement. Total churn on the 350-policy cohort dropped from a projected 18% (63 policies) to 8.6% (30 policies), retaining 33 policies that would otherwise have walked. The hidden multiplier: 9 of the 22 retained customers also added a home or umbrella policy during the re-shop conversation, generating an additional $2,160 in commission not credited above.

“My carrier raises rates, my customer gets the bad news in the mail, I find out 60 days later that they shopped me. The postcard let me get there first.”

Owner-Agent, Cardinal Insurance (composite illustration)

What we’d do differently

  • Carrier-name personalization mattered. Generic "your auto policy" cards would have pulled at 5-7%; specifying "your Progressive policy" pushed response into the 11% range because the customer recognized this wasn't a cold quote-mill mailer.
  • Service framing beat savings framing. We tested copy variants in pilot: "save up to $400" pulled lower than "free 15-minute renewal review." Insurance customers want to feel served, not pitched.
  • We should have included a single line about cross-line policies (home, umbrella). The 9 cross-line conversions happened despite no card promotion of them: surfacing the option could have lifted that to 14-15.

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