Company lists · Data refreshed September 2026
Top 25 Outbound marketing service providers based in San Francisco, United States
RevenueBase identified 96 outbound marketing service providers headquartered in San Francisco, United States as of September 2026 and tracks 1,604 professional contacts across them, including 259 with verified work emails. New York is the largest hub.
This list covers outbound marketing service providers headquartered in San Francisco, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest outbound marketing service providers based in San Francisco, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 478 contacts → | ||||
Partial evidence “About DemandShore Since 2004, we’ve been working hard to deliver value to Sales & Marketing professionals across B2B Technology companies globally.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 98 contacts → | ||||
Indirect evidence “Start closing deals with the help of our SDRs and extensive business data.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 92 contacts → | ||||
Partial evidence “Activate provides content-powered demand-generation and marketing services for technology marketers, based our team's expertise in developing buyer insights, high-performance…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 83 contacts → | ||||
Partial evidence “KKBC is a B2B marketing agency, with the singular mission to maximize the value of multinational B2B companies' marketing investments.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 57 contacts → | ||||
Indirect evidence “Pixelo Digital is a global B2B growth and GTM agency, trusted by 250+ brands to drive revenue and accelerate pipeline.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 55 contacts → | ||||
Partial evidence “Ziff Davis B2B is the global market leader in omni-channel B2B marketing, providing our customers with precise access to the world’s most powerful technology buyers.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 53 contacts → | ||||
Indirect evidence “Start filling your pipeline now!” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 38 contacts → | ||||
Partial evidence “Digital Reach is an internet marketing firm focused on B2B Demand Generation and Inbound Marketing.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 29 contacts → | ||||
Indirect evidence “Rooster Grin Media was founded on the concept that we can be a competitive advantage for our clients.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 29 contacts → | ||||
Partial evidence “Powering B2B growth with outbound systems that attract mid-size and enterprise-qualified leads.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 13 contacts → | ||||
Partial evidence “Olivine Marketing is a full-service product marketing agency for B2B SaaS companies, founded in 2016.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 8 contacts → | ||||
Partial evidence “Mach 01 (Maak Zero-One) is a full-stack B2B marketing agency focused on marketing solutions for technology companies, startups, and beyond.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 7 contacts → | ||||
Partial evidence “optimyz interactive combines online marketing, web creative, and social content to help companies drive new customer acquisition.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 contacts → | ||||
Indirect evidence “At MFINITY, we specialize in B2B appointment generation designed to create meaningful sales conversations with the right decision-makers.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 contacts → | ||||
Indirect evidence “MAKING CONNECTIONS DELIVERING RESULTS We streamline your prospecting and lead generation, freeing up your time to focus on business growth.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 contacts → | ||||
Partial evidence “What if you could rapidly grow your customers without having to be an expert in every marketing channel?” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 contacts → | ||||
Partial evidence “As a highly skilled marketing specialists with a laser focus on marketing operations, marketing automation, and customer journey, we offer a wealth of expertise in developing…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 contacts → | ||||
Indirect evidence “Presidio Interactive is no longer in operation.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Partial evidence “The Halo Agency is unlike any other marketing options available today - it provides marketing services on demand to early stage innovation driven companies.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Partial evidence “Xenia Insights brings a dedicated team equipped with the experience to develop, implement and deploy customized outbound sales strategies designed to connect SMBs and emerging…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Partial evidence “Since 2007 we have provided a subscription-based marketing as a service solution perfectly tailored to the needs of real estate agents.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Partial evidence “Many small and mid-sized business owners are experts in their field - but struggle when it comes to marketing, lead generation, and sales strategy.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Partial evidence “2020systems is the leading provider of "MANAGED ONLINE MARKETING SERVICES" to businesses of all sizes.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “We are a passionate team of experts and business enthusiasts with UK, US, and Bangladesh offices.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: outbound marketing service providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names outbound marketing service providers.
- Partial evidence
- Its own public description names part of outbound marketing service providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name outbound marketing service providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 96 outbound marketing service providers based in San Francisco, United States
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Outbound marketing service providers based in San Francisco, United States at a glance
As of Sep 14, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 96 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 outbound marketing service providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in San Francisco, United States whose own description of what they do matches “outbound marketing service providers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names outbound marketing service providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among outbound marketing service providers, and records with no verified work email. Companies headquartered outside San Francisco 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 its RevenueBase Smart Search 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, 259 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 14, 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.
Outbound marketing service providers by metro in the United States
- Outbound marketing service providers in New York230
- Outbound marketing service providers in Los Angeles133
- Outbound marketing service providers in Miami116
- Outbound marketing service providers in Houston105
- Outbound marketing service providers in Sheridan98
- Outbound marketing service providers in Austin96
- Outbound marketing service providers in San Francisco96
- Outbound marketing service providers in Chicago87
- Outbound marketing service providers in Dallas82
- Outbound marketing service providers in San Diego80
- Outbound marketing service providers in Atlanta77
- Outbound marketing service providers in Denver69
- Outbound marketing service providers in Las Vegas69
- Outbound marketing service providers in Tampa56
- Outbound marketing service providers in Phoenix50
- Outbound marketing service providers in Orlando48
- Outbound marketing service providers in Boston47
- Outbound marketing service providers in Charlotte44
- Outbound marketing service providers in Wilmington40
- Outbound marketing service providers in Portland38
- Outbound marketing service providers in Philadelphia34
- Outbound marketing service providers in San Jose33
- Outbound marketing service providers in Raleigh31
- Outbound marketing service providers in Salt Lake City31
- Outbound marketing service providers in Scottsdale31
- Outbound marketing service providers in Seattle31
- Outbound marketing service providers in Fort Lauderdale29
- Outbound marketing service providers in Boca Raton28
- Outbound marketing service providers in Nashville27
- Outbound marketing service providers in Pittsburgh27
- Outbound marketing service providers in Irvine26
- Outbound marketing service providers in Jacksonville26
- Outbound marketing service providers in San Antonio26
- Outbound marketing service providers in Dover25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names outbound marketing service providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many outbound marketing service providers are there based in San Francisco, United States?
RevenueBase identified 96 outbound marketing service providers headquartered in San Francisco, 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?
Demandshore, headquartered in San Francisco, tops this list with the largest team on record.
Which city has the most outbound marketing service providers?
New York leads with 230 headquartered companies, followed by Los Angeles (133) and Miami (116).
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 259 verified decision-maker contacts tracked across these 96 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 14, 2026.
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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 Smart Search, 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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