When Ads and Email Both Take Credit
Attribution, breakeven and spending rules for a direct-to-consumer brand
Direct-to-consumer curriculum and games brand | $5M to $10M in revenue | Fractional CFO: attribution, unit economics and ad spending rules | September 2025 to present
At a glance
35.5%
of 2025 sales was claimed by both the ad tools and the email tools
3.50x vs. 2.76x
return on ad spend as reported, against the best estimate, with breakeven at 1.33x to 1.43x
27.5%, not 84%
the share of sales credited to ads once last-click became the standard
$65
the cap set on the cost of a new customer in one product line, against the $200 to $300 the agency proposed
The situation
The brand’s ad tools and email tools each reported strong results, and spending rules ran on the platforms’ own return figures. But:
- the ad tools claimed 84% of the store’s 2025 sales, and the email tools claimed 51%
- reported return on ad spend was 3.50x, with no independent tracking to check it against
- in May 2026 the agency proposed accepting $200 to $300 for each new customer in one product line
What we did
- Set breakeven return on ad spend from the brand’s margin (November 2025)
- Reconciled what the ad and email tools claimed against the sales the store actually booked, month by month, and re-estimated return on ad spend (January 2026)
- Built a customer-value model on the client’s own customer data (May 2026)
- Built a contribution model and a fourth-quarter brief (September 2026)
What we found
- Double counting. 35.5% of 2025 sales had been claimed by both the ad tools and the email tools. The overlap was 20% in March 2025 and 52% in December.
- Return on ad spend. It was 3.50x as the platforms reported it and 2.76x on the best estimate, against a breakeven of 1.33x to 1.43x. That’s above breakeven, but below what the tools claimed.
- Tracking reset. An independent attribution tool was installed in January 2026, and last-click became the standard. On that basis, ads were credited with 27.5% of sales from March 1 to 22, 2026, against 84% before.
- What changed.
- May 2026: a $65 cap on the cost of a new customer in one product line, with a brake at $100, in place of the $200 to $300 the agency proposed
- August 2026: a cut in ad spend for December 14 to 25, which we proposed, was adopted
- September 2026: that product line’s awareness budget was cut from $1,015 to $33 a day, and its purchase budget from $1,965 to $75
How we measured this: the figures come from reconciling what the ad and email tools claimed against the sales the store actually booked, month by month; the engagement is ongoing.
What it means
Every ad platform grades its own homework. Once claimed sales were tied to what the store actually booked, spending rules could start from customer value and contribution, not the platforms’ own figures.