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Company lists · Data refreshed September 2026

Top 25 Lead generation agencies based in Denver, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 77 companies tracked

RevenueBase identified 77 lead generation agencies headquartered in Denver, United States as of September 2026 and tracks 816 professional contacts across them, including 128 with verified work emails. New York is the largest hub.

This list covers lead generation agencies headquartered in Denver, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review
77Companies
816Contacts tracked
128Verified emails
Unlock all 77 companies Free signup · no credit card · 500 free credits

The 25 largest lead generation agencies based in Denver, United States

Ranked by team size
Top 25 of 77 lead generation agencies based in Denver, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names lead generation agencies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
SaleshiveIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 202651-200455
Source: company website · checked Sep 4, 2026
2
Gensales Marketing GroupStrong evidence
Denver, CO, United StatesHQ checked Sep 4, 202651-20033

“Cold Calling, Appointment Setting and Sales Lead Generation Experts.”

Source: company website · checked Sep 4, 2026
3
Catalyst MarketingIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 202611-5031

“Catalyst is a growth marketing company that fuses AI technology with strategic and creative expertise to deliver intelligent solutions that transform ambitious leaders into…”

Source: company website · checked Sep 4, 2026
4
Hometown QuotesIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 202611-5024

“Hometown Quotes is built and run by insurance industry experts.”

Source: company website · checked Sep 4, 2026
5
High I.QStrong evidence
Denver, CO, United StatesHQ checked Sep 4, 202611-5020

“A full service growth agency designed to rapidly accelerate your real estate brand, by making your innovation & quality obvious-Lead Generation -Custom Real Estate Websites…”

Source: company website · checked Sep 4, 2026
6
Extended PresenceStrong evidence
Denver, CO, United StatesHQ checked Sep 4, 202611-5018

“Extended Presence is a professional Sales Outsourcing and Lead Generation company that specializes in developing and managing outsourced sales and marketing programs for large…”

Source: company website · checked Sep 4, 2026
7
Global Social Media MarketingIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-1013

“GSMM helps you engage your target audiences regionally, nationally, or internationally to achieve your business goals or education results.”

Source: company website · checked Sep 4, 2026
8
RefractroiIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 202611-509

“Helping business leaders build predictable revenue streams through data-driven marketing strategies.”

Source: company website · checked Sep 4, 2026
9
Clicta Digital AgencyIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 202611-506

“Clicta Digital Agency is a growth-driven digital marketing agency in Denver, Colorado.”

Source: company website · checked Sep 4, 2026
10
Koalaty LeadsStrong evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-106

“Koalaty Leads specializes in lead generation for Home Services (windows, roofing, gutters, flooring, siding, bath remodel, kitchen remodel, and others) on Facebook, Instagram…”

Source: company website · checked Sep 4, 2026
11
Howdy SalesStrong evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-105

“We take the guesswork out of lead generation by using real buying signals and network intelligence to connect you with the right buyers-before your competitors even know they're…”

Source: company website · checked Sep 4, 2026
12
Connect Your LeadsPartial evidence
Denver, CO, United StatesHQ checked Sep 4, 202611-503

“Connect Your Leads is a trusted nationwide hub for buyers and sellers of high-quality sales leads.”

Source: company website · checked Sep 4, 2026
13
Verdi Behavioral MarketingIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 202611-503

“Verdi drives buyer behavior.”

Source: company website · checked Sep 4, 2026
14
Lross Marketing ConsultingIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-103

“Ask your current digital marketing company who your customers are and why those customers should pick you over your competitors.”

Source: company website · checked Sep 4, 2026
15
Telescope MappingIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-103

“At Telescope Mapping, we pride ourselves on delivering tailored sales & marketing strategies & services that drive measurable growth.”

Source: company website · checked Sep 4, 2026
16
Pure Leads LABStrong evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-101

“Pure Leads Lab has been changing the game of how our clients have been able to increase their online lead generation, engagement with their business, and exemplifying their…”

Source: company website · checked Sep 4, 2026
17
JorifyPartial evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-101

“Say goodbye to boring lead gen and hello to campaigns that jorify your business.”

Source: company website · checked Sep 4, 2026
18
Massive Marketing ProsIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-101
Source: company website · checked Sep 4, 2026
19
Star Strategy MarketingIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-101

“Star Strategy was founded on the belief that you shouldn't need an enterprise level marketing budget to get an effective, data-driven marketing strategy.”

Source: company website · checked Sep 4, 2026
20
Vycarious MediaIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-101

“Welcome to Vycarious Media!”

Source: company website · checked Sep 4, 2026
21
Improve IT Marketing LLCPartial evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-101

“Improve It Marketing was launched with the goal of turning our clients' websites into their #1 source of leads.”

Source: company website · checked Sep 4, 2026
22
Legal Guardian DigitalStrong evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-101

“Legal Guardian is a law firm lead generation agency that specializes in SEO for lawyers, local SEO, web design, and PPC.”

Source: company website · checked Sep 4, 2026
23
Nextlead Marketing TechnologiesPartial evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-101

“Our unique technology solves the biggest problem in online marketing - lead conversion.”

Source: company website · checked Sep 4, 2026
24
Fresh River MarketingPartial evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-101

“We help companies find high-quality lead sources.”

Source: company website · checked Sep 4, 2026
25
LeadmaximusIndirect evidence
Denver, CO, United StatesHQ checked Sep 4, 20261-101

“Signal-Driven Revenue Engines for B2B Companies LeadMaximus turns market intent into qualified pipeline using AI-powered buying signal intelligence.”

Source: company website · checked Sep 4, 2026

Showing 25 of 77 lead generation agencies based in Denver, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 128 reachable decision-makers.

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Lead generation agencies based in Denver, United States at a glance

As of Sep 4, 2026
1-10Median size (employees)
New YorkLargest hub · 300 HQs
Contacts with mobile numbers
Sep 4, 2026Data refreshed

Companies by employee count

1-10
46
11-50
24
51-200
6
201-500
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Denver, over 77 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among lead generation agencies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Denver, United States whose own description of what they do matches “lead generation agencies”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among lead generation agencies, and records with no verified work email. Companies headquartered outside Denver are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 128 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 4, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Lead generation agencies by metro in the United States

Frequently asked

How many lead generation agencies are there based in Denver, United States?

RevenueBase identified 77 lead generation agencies headquartered in Denver, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Saleshive, headquartered in Denver, tops this list with the largest team on record.

Which city has the most lead generation agencies?

New York leads with 300 headquartered companies, followed by Miami (164) and Los Angeles (156).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 128 verified decision-maker contacts tracked across these 77 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 2026.

Ready to reach these companies? Verified emails and direct dials for all 77 lead generation agencies based in Denver, United States. Start with a free account, no credit card.

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Related lists

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.

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