Company lists · Data refreshed September 2026
Top 25 Donor retention consulting firms worldwide
RevenueBase identified 1,563 donor retention consulting firms worldwide as of September 2026 and tracks 9,180 professional contacts across them, including 4,236 with verified work emails. The United States is the largest market and New York the largest hub.
This list covers donor retention consulting firms worldwide, 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 28, 2026. Country and city lists for donor retention consulting firms follow the table.
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 donor retention consulting firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 728 contacts → | ||||
Indirect evidence “For over 75 years, CCS Fundraising has empowered many of the world’s greatest organizations to advance some of the most important causes in history.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 492 contacts → | ||||
Indirect evidence “RKD Group is the trusted growth architect for nonprofits.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 208 contacts → | ||||
Indirect evidence “We are M+R.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 137 contacts → | ||||
Partial evidence “AGP partners with mission-driven organizations nationwide to strengthen donor engagement and support long-term, sustainable performance.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 125 contacts → | ||||
Partial evidence “BWF Zuri is the nonprofit sector’s most comprehensive fundraising consulting company, helping organizations thrive in a rapidly changing landscape.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 112 contacts → | ||||
Partial evidence “Our team of expert consultants develops innovative direct marketing-driven donor development programs for exceptional nonprofit causes like yours.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 106 contacts → | ||||
Indirect evidence “Zuri Group partners with nonprofit organizations to turn big ideas into reality.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 102 contacts → | ||||
Partial evidence “Campbell & Company is a national nonprofit consulting firm that helps organizations create greater impact through fundraising, communications and strategic information services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 101 contacts → | ||||
Indirect evidence “At KCI, we are a firm focused on values and people…both ours and yours.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 83 contacts → | ||||
Partial evidence “Schultz & Williams is a national consulting firm dedicated to helping nonprofits of all types and sizes achieve financial stability, meet organizational goals, and support greater…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 79 contacts → | ||||
Indirect evidence “Marts & Lundy serves as a trusted partner to mission-driven organizations whose bold aspirations are realized through the power of philanthropy.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 74 contacts → | ||||
Partial evidence “Avalon is a full-service fundraising consulting agency helping nonprofits realize the full potential of their direct marketing programs through multi-channel fundraising…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 64 contacts → | ||||
Partial evidence “Lautman Maska Neill & Company is an award-winning direct response consulting firm specializing in fully-integrated fundraising exclusively for nonprofits.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 59 contacts → | ||||
Partial evidence “Graham-Pelton is the fundraising consulting firm chosen by leading nonprofits worldwide.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 58 contacts → | ||||
Indirect evidence “Westfall Gold is an experience design agency and fundraising consultancy for organizations passionate about advancing good.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 57 contacts → | ||||
Indirect evidence “Founded in 1982, The FOCUS Group has served nonprofits for nearly four decades.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 57 contacts → | ||||
Partial evidence “GOBEL is the #1 consulting and technology firm working exclusively in healthcare philanthropy.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 56 contacts → | ||||
Indirect evidence “We help nonprofits amplify their impact to create more good in the world.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 54 contacts → | ||||
Indirect evidence “Surge Direct is one of the nation's foremost Direct Sales and Marketing companies.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 54 contacts → | ||||
Partial evidence “Cargill Associates is a full-service national fundraising consulting firm committed to tailoring carefully designed programs to meet the needs of each client.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 50 contacts → | ||||
Indirect evidence “Results, it’s more than an ad campaign, it’s part of the core values which guide our work.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 50 contacts → | ||||
Indirect evidence “To our clients, we are your trusted, strategic partner, consistently delivering superior results.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 49 contacts → | ||||
Partial evidence “Coxe Curry & Associates is the Atlanta consulting firm creating the strategies and connections that help nonprofits thrive.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 49 contacts → | ||||
Partial evidence “Welcome to 180 Degrees Consulting SGTB Khalsa, where we believe that every non-profit has the potential to change the world.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 47 contacts → | ||||
Partial evidence “Blue North Strategies is a consulting and marketing agency exclusively serving the non-profit sector.” Source: RevenueBase Database · checked Sep 28, 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: donor retention consulting firms. 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 donor retention consulting firms.
- Partial evidence
- Its own public description names part of donor retention consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name donor retention consulting firms. 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 1,563 donor retention consulting firms worldwide
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Donor retention consulting firms worldwide at a glance
As of Sep 28, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 donor retention consulting firms, 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.
- Coverage
- Every country. Country and city lists for donor retention consulting firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “donor retention consulting firms”. 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 donor retention consulting firms), 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 donor retention consulting firms, and records with no verified work email.
- 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, 4,236 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 28, 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.
Donor retention consulting firms by location
8 lists · largest firstEvery Donor retention consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Donor retention consulting firms based in the United States926
- Donor retention consulting firms based in Canada75
- Donor retention consulting firms based in the United Kingdom61
- Donor retention consulting firms based in Australia27
Cities
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 donor retention consulting firms, 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 donor retention consulting firms are there worldwide?
RevenueBase identified 1,563 donor retention consulting firms worldwide 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?
CCS Fundraising, headquartered in New York, tops this list with the largest team on record.
Which country has the most donor retention consulting firms?
The United States leads with 926 companies, followed by Canada (75) and the United Kingdom (61). Every donor retention consulting firms list by country and city is linked on this page.
Which city has the most donor retention consulting firms?
New York leads with 50 headquartered companies, followed by Chicago (40) and Atlanta (30).
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 4,236 verified decision-maker contacts tracked across these 1,563 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 28, 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.