214M
Pieces mailed, lifetime
Across 18,427 campaigns shipped from Cincinnati since 2017.
Direct mail, operated end-to-end
9 days from approved artwork to mailbox, audited across 18,400+ campaigns.
KDO Mailing runs list sourcing, design, printing, postage, and tracked delivery under one accountable team — so the direct mail your marketing director signs off on is the direct mail your customers actually open.
- Campaigns shipped (2017–Q1 2025)
- 18,427
- Pieces mailed, lifetime
- 214M
- Avg. response rate vs. DMA baseline
- 5.8% / 2.4%
- API-triggered on-time dispatch, 2024
- 99.94%
The operating system
How approved artwork becomes delivered mail in nine business days.
Five operational steps, one accountable owner. Day numbers below are real medians pulled from 18,427 campaigns shipped since 2017 — not sales-floor estimates.
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Day 0
List & audience build
You ship us a seed file or hand us your CDP. We dedupe against the USPS NCOA + 412 suppression flags and return a mail-ready count within 24 hours.
Avg. 38,200 net names / drop -
Day 1–2
Design & MDA review
In-house designers lay up the piece. Three USPS-certified Mailpiece Design Analysts on staff preflight every size, fold, and barcode before plates are burned — one of 47 providers nationwide with full MDA certification in-house.
2 rounds of revisions, included -
Day 3–6
Print & variable data
Six offset presses and two HP Indigo digital lines run on a rotation built for 250K+ piece runs. Personalization, A/B variants, and MapMail imagery hit the piece at full speed, not as a billed-up add-on.
PVA Best of Category, 2022 & 2024 -
Day 7–8
Postage, drop & induction
We commingle, walk-sequence, and induct at the SCF. Tracking is stitched onto every piece via Intelligent Mail barcodes so you can see arrival, not just “shipped.”
99.94% on-time dispatch, 2024 -
Day 9–30
MatchBack attribution
Proprietary MatchBack ties 87% of mailed pieces to a digital action within 30 days — the highest attribution rate in the independent direct mail space, per the 2024 Print & Postage Benchmark Report.
87% mail-to-digital match, 30-day
Attribution, not anecdote
The reason direct mail becomes accountable: every piece traceable to a digital action within 30 days.
Most direct mail vendors hand you a delivery report and a shrug. KDO hands you MatchBack — a per-piece identity graph that joins every mailed name to the digital actions they took within 30 days of arrival, across your owned channels and the open web.
- 87% mail-to-digital match across 2024 campaigns — verified by the 2024 Print & Postage Benchmark Report, the highest attribution rate in the independent direct mail space.
- Drop-in integrations with Klaviyo, HubSpot, Salesforce, and Shopify Audiences so a triggered mailing fires in under 90 seconds from the data event.
- 9.2 million triggered mailings processed via API in 2024, with 99.94% on-time dispatch — auditable per request.
- PII handling audited annually by Schellman & Co. under SOC 2 Type II, certified continuously since 2021.
The audited proof sheet
These are our audited numbers. Compare them to your last direct mail vendor.
5.8%
Avg. response on prospect house lists
2.4× the 2.4% DMA industry baseline, audited annually.
$34.10
Audited CPA, 2024 postcard campaigns
Verified annually by a third-party media auditor; available on request.
99.94%
On-time API dispatch, 2024
Across 9.2M triggered mailings fired through Klaviyo, HubSpot, Salesforce, Shopify.
4.9/5
G2 + Capterra verified rating
Drawn from 612 verified reviews as of April 2025.
SOC 2 II
Type II certified since 2021
PII handling audited annually by Schellman & Co.
2,400+
Brands served, named roster
Allbirds, Misfits Market, Athletic Greens, and 14 Inc. 5000 retail names.
9 days
Approved artwork → in-home
Average turnaround, verified across 18,400+ campaigns since 2017.
A roster you can pattern-match against
2,400+ brands. Here are four you already know.
- Allbirds
- Misfits Market
- Athletic Greens
- 14 Inc. 5000 retail fastest-growers
- Allbirds
- Misfits Market
- Athletic Greens
- 14 Inc. 5000 retail fastest-growers
Plus 2,400 mid-market and emerging brands running 1–10 direct mail campaigns per quarter through KDO. Logos shown are the named roster in our verified references; full case studies available on request.
Where KDO already runs programs
Three verticals, three mechanics, three audited outcomes.
If you operate in one of these lanes, the campaign pattern below is already proven inside KDO — not pitched as theory.
DTC subscription · retention
Win-back by MapMail, not blast radius.
Subscription brands use KDO’s MapMail imaging to mail 28 unique neighborhood designs in a single run, with each creative tied to the recipient’s nearest store. Trigger fires from a 45-day lapse event in Klaviyo.
- Reactivation lift vs. control
- +22.6%
- Audited CPA, 2024 postcard
- $34.10
Franchise multi-location · lead-gen
One campaign, 240 localized mailings.
Multi-location franchises mail radius-targeted postcards with neighborhood-specific offers, hours, and offers — every piece built from a single approved master template. Drop-in Salesforce hand-off keeps franchise owners out of the spreadsheet.
- Cost per lead, 2024 average
- $11.40
- Avg. locations per rollout
- 240
B2B ABM · trigger mail
Direct mail that fires in 90 seconds from the data event.
Salesforce, HubSpot, and Klaviyo events route through KDO’s API — a target account reaching a pricing page, a stalled opportunity, a trial activation — and a hand-addressed piece is in induction before the prospect’s next standup.
- API dispatch latency, 2024
- < 90 sec
- API-triggered mailings, 2024
- 9.2M