Company lists · Data refreshed November 2026

Top 25 Nonprofit fundraising call services worldwide

RevenueBase identified 410 company matches for nonprofit fundraising call services worldwide as of November 2026 and tracks 7,956 professional contacts across them, including 1,632 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for nonprofit fundraising call services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for nonprofit fundraising call services follow the table.

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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
410Companies
7,956Contacts tracked
1,632Verified emails
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The 25 largest nonprofit fundraising call services worldwide

Ranked by team size
Top 25 of 410 company matches for nonprofit fundraising call services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 6, 2026n/a655 contacts →

Exact match

“Appco UK is an expert at designing, planning, managing, executing and analysing field marketing and fundraising campaigns.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchPlano, TX, United StatesHQ recorded Nov 6, 2026201-500514 contacts →

Exact match

“RKD Group is the trusted growth architect for nonprofits.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchCherry Hill, United StatesHQ recorded Nov 6, 20261,001-5,000357 contacts →

Exact match

“Our motto says it all: We Help People Who Help People.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMesa, AZ, United StatesHQ recorded Nov 6, 2026201-500288 contacts →

Exact match

“MDS provides a complete array of telephone fundraising services for non-profit and political organizations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchUnited StatesHQ recorded Nov 6, 2026501-1,000221 contacts →

Exact match

“Nonprofit Organizations count on The Heritage Company for fundraising and outreach to donors, members and other constituents.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202651-200172 contacts →

Exact match

“We are a face-to-face fundraising agency, connecting donors and the causes they are passionate about.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSassenheim, NetherlandsHQ recorded Nov 6, 2026501-1,000126 contacts →

Exact match

“The Sales Company is de partij voor het Face2Face werven van structurele donateurs voor charitatieve instellingen en leden voor commerciele partijen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchParis, FranceHQ recorded Nov 6, 202651-200124 contacts →

Exact match

“Cause à Effet est l’entreprise leader de la collecte de fonds en face-à-face depuis 15 ans.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchNorth York, ON, CanadaHQ recorded Nov 6, 2026201-500122 contacts →

Exact match

“Miratel is a Toronto based, 24 x 7 inbound and outbound contact centre and mail house specializing in nonprofit fundraising services such as telephone fundraising, lottery…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchReading, United KingdomHQ recorded Nov 6, 2026201-500113 contacts →

Exact match

“Charity Link delivers fundraising and awareness campaigns for the charity sector through our passionate, professional and ethical way of working.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCabot, AR, United StatesHQ recorded Nov 6, 202651-200108 contacts →

Exact match

“At Wilson-Bennett Technology, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchChippenham, United KingdomHQ recorded Nov 6, 2026201-500107 contacts →

Exact match

“At Woods Valldata, we’re here for you and there for your supporters.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchWeston, United KingdomHQ recorded Nov 6, 2026501-1,00099 contacts →

Exact match

“Wesser – “Ethical Fundraising, Outstanding Service” – Since 1968 Wesser offers an all-in-one fundraising programme consisting of face-to-face supporter recruitment, telephone…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchDenver, CO, United StatesHQ recorded Nov 6, 202651-20090 contacts →

Exact match

“We are Donor Development Strategies (DDS), a national field-organizing firm that specializes in raising money and signing up members for high-profile non-profits through…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchZürich, SwitzerlandHQ recorded Nov 6, 202651-20085 contacts →

Exact match

“Die 1995 gegründete Corris AG bietet Fundraising-Dienstleistungen für Non-Profit-Organisationen in der Schweiz mit Schwerpunkten in folgenden Bereichen an: Infostand-Fundraising…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202651-20084 contacts →

Exact match

“Avalon is a full-service fundraising consulting agency helping nonprofits realize the full potential of their direct marketing programs through multi-channel fundraising…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMontreal, QC, CanadaHQ recorded Nov 6, 202611-5083 contacts →

Exact match

“At Fundraising Direct we are passionate about innovation and creativity.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAlmere, NetherlandsHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“Kalff verzorgt hoge kwaliteit klantcontacten voor non-profit organisaties.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchTucson, AZ, United StatesHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“Streetlight Digital is a full-spectrum nonprofit fundraising and marketing partner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchNaperville, IL, United StatesHQ recorded Nov 6, 202651-20057 contacts →

Exact match

“Results, it’s more than an ad campaign, it’s part of the core values which guide our work.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchIjsselstein, NetherlandsHQ recorded Nov 6, 202651-20057 contacts →

Exact match

“4DMC is hét contact center voor goede doelen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchFalmouth, United KingdomHQ recorded Nov 6, 202611-5057 contacts →

Exact match

“We work with over 70 charities (of differing sizes) on a range of campaigns, making over calls per year and raising in excess of £7M a year, The consistent ethos of QTS is that we…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchFort Worth, United StatesHQ recorded Nov 6, 202611-5057 contacts →

Exact match

“Cargill Associates is a full-service national fundraising consulting firm committed to tailoring carefully designed programs to meet the needs of each client.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchNew York, DC, United StatesHQ recorded Nov 6, 202651-20053 contacts →

Exact match

“Graham-Pelton is the fundraising consulting firm chosen by leading nonprofits worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchNational, CO, United StatesHQ recorded Nov 6, 202651-20050 contacts →

Exact match

“Together, our teams build out the donor base of nonprofits, whether on the phones or at the doors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 410 nonprofit fundraising call services worldwide

See the full list, filter by size, metro and specialty, and access 1,632 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Nonprofit fundraising call services worldwide at a glance

As of Nov 6, 2026
20.5%Verified-email coverage
19.4Average contacts per company
1-10Median size (employees)
2.7%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
208
11-50
115
51-200
56
201-500
18
501-1,000
6
1,001-5,000
4

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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.
Coverage
Every country. Country and city lists for nonprofit fundraising call services are linked below.
What qualifies
Company records worldwide whose business descriptions match “nonprofit fundraising call services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,632 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Nonprofit fundraising call services by location

3 lists · largest first

Every Nonprofit fundraising call services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “nonprofit fundraising call services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many nonprofit fundraising call services are there worldwide?

RevenueBase identified 410 company matches for nonprofit fundraising call services worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Appco UK tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most nonprofit fundraising call services?

The United States leads with 173 companies, followed by Canada (33) and the United Kingdom (28). Every nonprofit fundraising call services list by country and city is linked on this page.

Which city has the most nonprofit fundraising call services?

New York leads with 11 company records, followed by Toronto (10) and Washington (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,632 professional contacts with verified work emails tracked across these 410 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 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.