Outsourced GTM engineering means different things at different agencies. The delivery model decides who sends the messages and who owns the system at the end, so we sorted ten agencies and Sales.co into the three models, using each site's own words.
- Run it for you: SalesCaptain ("we connect with, engage, and follow up with your prospects for you"), Understory (done for you, plus training and hand-over on request), Growth Engine X (runs cold email; all work transferable), DevCommX ("builds and runs the actual infrastructure"), demandDrive (outsourced SDRs in your systems) — and Sales.co ($5,500/mo, four channels, client owns the data)
- Build and hand over: The GTM Engineering Company (builds in your HubSpot or Salesforce, from $5,000/mo) and The Kiln (custom projects, few clients at a time)
- Either: ColdIQ (system in your accounts, or its operators run it; 90-day first term) and RevPartners ($25,000 build you keep, or a recurring service from $12,900/mo)
- Neither: Earleads sells AI search visibility and CRM routing, no outbound
- Freelancers: $80-$200/hr (DevCommX's post) or $150-$300/hr (Sloane Staffing); at $150/hr, Sales.co's month buys about 37 hours
- Ownership: five of ten do not say who owns the work; Growth Engine X, ColdIQ, The GTM Engineering Company and Sales.co each state it
Full report: Haus Research ranking of GTM engineering agencies
The source comparison: Sales.co GTM engineering
Haus Research — hausresearch.com
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Audio briefings from Haus Research, a research firm. Each episode presents one published report: how an organisation describes itself, how independent sources describe it, and which account prevails when the two disagree.