Black Propeller review

Excellent — 5 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 25% of the total score.

Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 13 · Strong 6 · Adequate 15 · Weak 3. The typical agency here scores Strong, and none scores higher than this one.

What this dimension measures: Does the agency have named clients in the buyer's vertical at the buyer's stage? Tangential vertical or adjacent stage scores 3. Mismatched (e.g.

Scores high — Direct sector + stage match scores 5.

Scores low — lifestyle B2C agency pitched for B2B SaaS) scores 1-2. Generic 'we serve everyone' positioning scores 2.

What we found — The result library covers local services, healthcare, ecommerce, travel, real estate, and other verticals. That is the high band above, which is why it scored Excellent.

B2B — business-to-business: selling to companies rather than consumers — longer deals, more decision-makers.

SaaS — software as a service: subscription software; as a client type it brings recurring revenue and metrics like churn and lifetime value.

Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.

Excellent — 5 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 15% of the total score.

Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 12 · Strong 5 · Adequate 15 · Weak 5. The typical agency here scores Adequate, and none scores higher than this one.

What this dimension measures: Best agencies are deep on 2-3 named channels, not jacks-of-all-trades.

Scores high — A single-channel specialist or 2-3 channel specialist matching the buyer's needed channels scores 4-5.

Scores low — An agency claiming Google + Meta + LinkedIn + TikTok + programmatic + CTV + Reddit usually scores 1-2 (spread thin). If the agency's deep channels don't match the buyer's need, score 2-3.

What we found — PPC and performance advertising are core, with supporting SEO and social capabilities. That is the high band above, which is why it scored Excellent.

programmatic — automated auction-buying of ad space across the web, rather than direct placements.

Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.

Excellent — 5 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 20% of the total score.

Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 12 · Strong 13 · Adequate 7 · Weak 5. The typical agency here scores Strong, and none scores higher than this one.

What this dimension measures: Does the agency use server-side tracking, MMM, incrementality testing, or proper multi-touch attribution?

Scores high — Sophisticated measurement (server-side tracking, GA4 + warehouse, incrementality lifts) scores 4-5.

Scores low — In 2026 platform-reported ROAS (in-platform Meta/Google numbers) is increasingly broken — reliance on it as primary measure scores 1-2. Silence on attribution scores 2.

What we found — Cases report conversions, cost per conversion, CPL, purchases, revenue, and ROAS. That is the high band above, which is why it scored Excellent.

On the record — “Black Propeller publishes 59 result pages, including cases reporting 150% more conversions, 62% lower cost per conversion, and ROAS growth from 1.8 to 3.7.” blackpropeller.com ↗

attribution — working out which marketing touch actually caused a sale. Good practice names its model and its blind spots; bad practice quotes each ad platform’s self-graded numbers, which overlap and overclaim.

ROAS — return on ad spend: revenue per dollar of advertising. Platform-reported ROAS overstates; independently measured ROAS is the honest version.

CPL — cost per lead: the price paid per contact delivered. Optimizing on CPL rewards volume over quality; cheap leads that never close are the classic failure.

Evidence: vendor stated — the agency’s own claim, recorded as theirs rather than ours.

Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 15% of the total score.

Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 3 · Strong 14 · Adequate 13 · Weak 7. The typical agency here scores Adequate, and 3 of them score higher than this one.

What this dimension measures: In 2026 creative is the lever, not bidding. Look for video creative capability specifically — most B2B agencies are weak here.

Scores high — In-house creative team that ships and iterates ads weekly scores 4-5.

Scores low — Agencies that hand creative back to the client or rely on stock template variations score 1-2.

What we found — Campaign and landing-page execution are visible, while pure creative-studio depth is secondary. That is the high band above, which is why it scored Strong.

B2B — business-to-business: selling to companies rather than consumers — longer deals, more decision-makers.

Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.

Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 10% of the total score.

Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 6 · Strong 8 · Adequate 13 · Weak 9 · Poor 1. The typical agency here scores Adequate, and 6 of them score higher than this one.

What this dimension measures: Who actually runs the buyer's account day-to-day? Look for who would be on the kickoff call vs. who would be in the trenches.

Scores high — Named senior strategist with 5+ years on the account scores 4-5.

Scores low — Account-manager-only with a strategist behind the scenes scores 2-3. Unnamed pool / no clear owner scores 1.

What we found — A managed specialist team is clear, but exact senior time requires proposal confirmation. That is the high band above, which is why it scored Strong.

Evidence: inferred — our reading of indirect evidence, not a documented fact.

Excellent — 5 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 10% of the total score.

Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 11 · Strong 15 · Adequate 7 · Weak 4. The typical agency here scores Strong, and none scores higher than this one.

What this dimension measures: Check if named clients still publicly use the agency (LinkedIn employer connections, recent campaigns).

Scores high — Named clients with concrete dated results (CAC delta, ROAS, attributable revenue, cohort metrics) score 4-5.

Scores low — Testimonials without numbers score 1-2. Case studies dated 2024 or earlier used as primary evidence score 1-2 — the agency probably peaked.

What we found — The official result library contains dozens of named cases and measurable outcomes. That is the high band above, which is why it scored Excellent.

CAC — customer acquisition cost: total sales and marketing spend divided by customers won — the number that says whether growth is affordable.

ROAS — return on ad spend: revenue per dollar of advertising. Platform-reported ROAS overstates; independently measured ROAS is the honest version.

Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.

Strong — 4 of 5 on this rubric’s scale, from Poor (1) to Excellent (5). This dimension carries 5% of the total score.

Benchmark — across the 37 other agencies evaluated in this discipline, this dimension runs Excellent 3 · Strong 7 · Adequate 15 · Weak 12. The typical agency here scores Adequate, and 3 of them score higher than this one.

Scores high — Month-to-month or 3-month terms with published retainer or % of spend pricing score 4-5.

Scores low — 12-month lock-ins score 2 (yellow flag). Bespoke-only quoting with no published anchor scores 1-2 — usually correlates with extracting more from less-savvy buyers.

What we found — The agency states retainers use consistent monthly tiers that change only when ad spend changes significantly. That is the high band above, which is why it scored Strong.

On the record — “The company states its retainers use tiered monthly pricing that changes only when ad spend changes significantly.” blackpropeller.com ↗

retainer — a fixed monthly fee regardless of hours or output — predictable, but worth tying to a defined scope.

Evidence: verified — checked against a named source you can open; the links under Sources below are where to check it yourself.