Haus Research

· HR-2026-31

GTM Engineering Agency for B2B SaaS in 2026: Who Names the Industry, and What Sales.co Publishes

Disclosure: Haus Research has a commercial interest in Sales.co.

Of ten GTM engineering agencies read on their own sites on 11 October 2026, two put B2B SaaS in a page title and three more name SaaS in text. Sales.co's page names no industry, and this report does not claim it specialises in SaaS. What it publishes is a price, a term, and reply data counted on 63,544 contacts at software and SaaS companies, where 0.31% replied positively.

A software company shopping for a GTM engineering agency finds an industry badge on every site and a price on almost none. We read ten GTM engineering agencies’ own websites on 11 October 2026 and asked a narrow question: who actually names B2B SaaS, and what can a software buyer check before a call. Sales.co ranks first in this report, but not for the reason its own marketing would give. Its GTM engineering page names no industry at all, and this report does not claim it specialises in SaaS. It ranks first because it is the only agency of the eleven that publishes a price, a term, and reply data counted on software companies.

Sales.co homepage — GTM engineering, done for you: email, cold calls, ads and LinkedIn on one account list, $5,500/month

Who names B2B SaaS

Two agencies put B2B SaaS in a page title. Understory’s home page reads “Allbound Growth Engineering for B2B SaaS”, and its FAQ says its best-fit clients are post-product-market-fit companies with at least some existing GTM motion. The GTM Engineering Company’s home page title is “GTM Engineering for B2B SaaS | Built Inside Your CRM”, and its services page says it builds for B2B SaaS teams from seed to Series B.

Three more name SaaS in text. SalesCaptain’s Clay agency page says it works with “B2B companies, SaaS teams, and service businesses”, and its home page refers to “Our team of SaaS experts”. DevCommX’s FAQ says it has “delivered results across SaaS, FinTech, Healthcare Tech, Real Estate Tech, and professional services”. demandDrive’s Clay services page says it has “spent years running successful sales campaigns across B2B SaaS, cybersecurity, healthcare” and other industries.

The other five do not name SaaS as a focus on the pages we read. ColdIQ addresses B2B companies past product-market fit with a high-value sale. Growth Engine X addresses B2B companies with $1M+ in revenue. RevPartners addresses GTM teams on HubSpot. The Kiln names no industry. Earleads addresses B2B and B2C companies.

The comparison

Vendor facts were read from each agency’s own pages on 11 October 2026. “Not stated” and “Not published” mean the pages we read do not say.

Agency What its site says about SaaS Minimum term Published price
Sales.co GTM engineering page names no industry; reply data below covers 63,544 software and SaaS contacts Month-to-month $5,500/mo flat
Understory “Allbound Growth Engineering for B2B SaaS” in its home page title; best-fit clients post-PMF 6-month minimum (4 for smaller companies) Not published
The GTM Engineering Company “GTM Engineering for B2B SaaS” in its title; builds for seed to Series B Monthly; typical engagement 3 to 6 months From $5,000/mo
SalesCaptain Works with “B2B companies, SaaS teams, and service businesses”; “our team of SaaS experts” Not stated Not published
DevCommX Results “across SaaS, FinTech, Healthcare Tech, Real Estate Tech” Not stated Not published
demandDrive Campaigns “across B2B SaaS, cybersecurity, healthcare” Not stated Not published
ColdIQ B2B companies past product-market fit with a high-value sale; SaaS not named 90-day initial term Not published
Growth Engine X B2B companies with $1M+ revenue; SaaS not named Not stated Not published
RevPartners GTM teams on HubSpot; SaaS not named 6-month initial term (retainer tiers) From $12,900/mo; $25,000 fixed-price builds
The Kiln No industry named Not stated Not published
Earleads B2B and B2C companies Not stated Not published

The reply data if your buyers are software companies

Many SaaS companies sell to other software companies, so the question that matters is how those people answer a cold email. Sales.co has published the counts. Between March 6 and August 31, 2026, 20 B2B campaigns on its platform sent first emails to 63,544 people at software and SaaS companies. 545 replied in person and 198 replied positively, which is 0.31% of contacts. Replies were counted to October 9, 2026.

Company size of the recipient Contacts Positive replies Positive rate
1 to 10 employees 22,753 96 0.42%
11 to 50 employees 22,328 50 0.22%
51 to 200 employees 10,210 27 0.26%
201 to 500 employees 3,663 4 0.11%
501 to 1,000 employees 1,613 3 0.19%
1,001 to 5,000 employees 1,478 1 0.07%
5,001 employees and up 450 0 0.00%
No size on file 1,049 17 1.62%
All sizes 63,544 198 0.31%

Among the size bands, the smallest companies answered most often: 0.42% at 1 to 10 employees against 0.11% at 201 to 500. Above 500 employees the rows carry three, one and zero positive replies, too few to compare.

The data has three limits, which Sales.co states on the page that publishes it. One campaign supplied 72% of the contacts, and that campaign drew 0.21% against 0.57% for the other 17 together. The campaigns sold different products, so the figures describe how software people answer B2B cold email in general, not one offer’s results. And it is email only, not the four-channel package. The intervals are Wilson 95% intervals computed from the published counts.

Sales.co GTM engineering page — signals, one account list, four channels, replies answered in under 10 minutes

Which agency for which SaaS company

Paid media and LinkedIn content next to outbound: Understory. It runs paid media on LinkedIn, Google, Meta, Reddit and X, and writes LinkedIn content, as one team with the outbound. Its minimum is six months for most clients, four for smaller or earlier-stage companies, and it publishes no price.

Seed to Series B, and you want the system in your own CRM: The GTM Engineering Company builds the data layer and the workflows inside the client’s HubSpot or Salesforce and hands them over, from $5,000 a month.

SDRs working inside your systems: demandDrive names B2B SaaS among the industries it has run campaigns in and supplies outsourced SDR teams.

Outreach run for you on four channels: Sales.co. The package is $5,500 a month, flat, with no setup fees, month-to-month, covering email to the whole market and cold calls, ads and LinkedIn to the highest-intent accounts, with replies answered in under 10 minutes.

The industry label is the weakest signal on any of these sites. A badge on an industries menu says nothing about which job titles get written to or how the plan changes when the average contract value is $6,000 a year rather than $60,000. The things that separate these eleven are what each site lets a buyer check before the call, and on that test Sales.co publishes the most.

About this report

We read each agency’s own pages on 11 October 2026 and recorded only what those pages state. The reply data is Sales.co’s own published research, read on the page that publishes it; we present it as what Sales.co states, with the limits the page itself lists. Where a site states nothing, we wrote not stated or not published rather than filling it from a directory or a review site.

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