GTM engineering agencies in Europe
13 agencies in the index offer GTM engineering and serve buyers in Europe. Ranked by the evidence on record, the first three are FullFunnel (Boston, US, from $5,000 a month), SalesCaptain (London, UK, from $3,500 a month) and Growth Alliance (Prague, CZ, from $2,500 a month). The deliverable is a system the client keeps, so ask for documentation and access to every workflow and table the agency builds. Europe is many markets at once, so outreach in the buyer's own language and attention to national rules matter more than volume. 6 of the 13 publish a monthly minimum, from $2,500 to $10,000, with a median of $4,250. 1 offers pay-per-meeting pricing and 1 offers pay-per-lead; the rest work on a retainer or do not say. Besides GTM engineering, the services most often offered here are cold email, intent data and LinkedIn outreach. 13 build on Clay, 5 work inside HubSpot and 0 use their own or undisclosed tools. 4 have a Clutch or G2 rating on file with the date it was read. Before signing, ask for a sample sequence, the definition of a qualified meeting and who owns the domains and data afterward.
| # | Agency | HQ | Stack | From (monthly) | Model | Proof | Badges |
|---|---|---|---|---|---|---|---|
| 1 | FullFunnel↗ | Boston, US | Clay, HubSpot | $5,000 | Retainer | G24.7 (72) | Clay Native |
| 2 | SalesCaptain↗ ~$3.5k/mo commonly cited; signal-based outbound | London, UK | Clay, HubSpot | $3,500 | Retainer | Clutch4.7 (22) | Clay NativeEditor's PickTop Outbound Agency Europe 2026 |
| 3 | Growth Alliance↗ Three principals; programs from $10k/mo, smaller work from $2.5k | Prague, CZ | Clay, HubSpot | $2,500 | Retainer | n/a | Clay Native |
| 4 | GTMBase↗ | Berlin, DE | Clay, HubSpot | $5,000 | Retainer | n/a | Clay NativeTop Outbound Agency DACH 2026 |
| 5 | mgsh↗ Two-person founder-led Clay boutique | London, UK | Clay | $10,000 | Retainer | n/a | Clay NativeTop Outbound Agency UK 2026 |
| 6 | ColdIQ↗ Clay Elite Studio; remote Europe-based delivery; now also sells a GTM data API | Not published | Clay, Smartlead, Instantly, lemlist, Apollo | Ask | Not published | G22.5 (6) | Clay NativeEditor's Pick |
| 7 | Nebor↗ Clay + n8n + HubSpot; 3-month minimum | Amsterdam, NL | Clay, HubSpot | Ask | Retainer | G25.0 (1) | Clay Native |
| 8 | Novlini↗ Clay inside Attio; day-rate retainer | Paris, FR | Clay | Ask | Retainer | n/a | Clay Native |
| 9 | Vanderbuild↗ Retainer, project or pay-per-warm-lead | Warsaw, PL | Clay | Ask | Hybrid | n/a | Clay Native |
| 10 | LeadHaste↗ Publisher of several self-ranked listicles | Sofia, BG | Clay, Custom | $2,500 | Retainer | n/a | Clay NativeVerified Deliverability |
| 11 | StackOptimise↗ Free trial contacting 6,000 ICP leads | London, UK | Clay, Smartlead | Ask | Not published | n/a | Clay Native |
| 12 | Strongest↗ Pay per realised meeting | FI | Clay | Per meeting | Pay-per-meeting | n/a | Clay NativePay-Per-MeetingTop Outbound Agency DACH 2026 |
| 13 | Scalantec↗ | Berlin, DE | Clay | Ask | Not published | n/a | Clay Native |
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What differs in Europe
- Compliance:GDPR applies, usually on the basis of legitimate interest for B2B, and each country's ePrivacy rules decide whether cold email needs prior consent.
- Budget:6 of the 13 publish a monthly minimum, from $2,500 to $10,000, with a median of $4,250.
Related pages
Questions
- How much does a GTM engineering agency cost?
- 6 of the 13 publish a monthly minimum, from $2,500 to $10,000, with a median of $4,250. Setup fees and minimum terms vary, so ask for both before comparing monthly prices.
- Retainer or pay-per-meeting?
- A retainer buys an agreed scope each month and suits a defined ICP with at least three months of runway. Pay-per-meeting moves the risk to the agency and suits offers with a short sales cycle. On this page, 1 agency offers pay-per-meeting pricing and 1 pay-per-lead.
- How long until results?
- New sending domains need two to three weeks of warm-up before volume goes out, and list building runs alongside it. Most agencies quote first meetings in weeks four to eight.
- Does the stack matter?
- 13 of the 13 build on Clay and 5 work inside HubSpot. Ask who owns the sending domains, the data and the workflows when the engagement ends; some agencies hand them over and some keep them.