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Apache SpamAssassin

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Apache SpamAssassin is an open source anti-spam platform giving system administrators a filter to classify email and block spam.

Email Spam Protection
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Market Share of Apache SpamAssassin

Current Customer(s)

158

Market Share (Est.)

0.15%

Ranking

#7

Top Competitors and Alternatives of Apache SpamAssassin

The top three of Apache SpamAssassin’s competitors in the Email Spam Protection category are Appriver with 37.83%, SpamExperts Email Archiving with 31.09%, Carrierzone with 26.65% market share.

TechnologyDomainsMarket Share (Est.)Versus page
Appriver4043337.83%Apache SpamAssassin vs Appriver
SpamExperts Email Archiving3322531.09%Apache SpamAssassin vs SpamExperts Email Archiving
Carrierzone2848526.65%Apache SpamAssassin vs Carrierzone
Sophos Email Gateway29642.77%Apache SpamAssassin vs Sophos Email Gateway
Junk Email Filter9900.93%Apache SpamAssassin vs Junk Email Filter
EuropeanMX2570.24%Apache SpamAssassin vs EuropeanMX
SpamHero1290.12%Apache SpamAssassin vs SpamHero
The Email Laundry1090.10%Apache SpamAssassin vs The Email Laundry
AltoSpam300.03%Apache SpamAssassin vs AltoSpam
SpamExperts230.02%Apache SpamAssassin vs SpamExperts
BlackBox100.01%Apache SpamAssassin vs BlackBox
KoruMail Cloud100.01%Apache SpamAssassin vs KoruMail Cloud
MailRoute90.01%Apache SpamAssassin vs MailRoute
modusCloud80.01%Apache SpamAssassin vs modusCloud
GlockApps80.01%Apache SpamAssassin vs GlockApps
MagicSpam70.01%Apache SpamAssassin vs MagicSpam
SpamTitan by TitanHQ60.01%Apache SpamAssassin vs SpamTitan by TitanHQ
EmailTrackerPro50.00%Apache SpamAssassin vs EmailTrackerPro
MegaNameServers50.00%Apache SpamAssassin vs MegaNameServers
SPAMfighter Exchange Module40.00%Apache SpamAssassin vs SPAMfighter Exchange Module
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Popular Comparisons

Top Competitors and Alternatives of Apache SpamAssassin

The top three of Apache SpamAssassin’s competitors in the Email Spam Protection category are Appriver with 37.83%, SpamExperts Email Archiving with 31.09%, Carrierzone with 26.65% market share.

Apache SpamAssassin vs Appriver

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Apache SpamAssassin vs SpamExperts Email Archiving

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Apache SpamAssassin vs Carrierzone

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Apache SpamAssassin vs Sophos Email Gateway

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Apache SpamAssassin vs Junk Email Filter

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Apache SpamAssassin vs EuropeanMX

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Apache SpamAssassin vs SpamHero

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Apache SpamAssassin vs The Email Laundry

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Customers of Apache SpamAssassin

Around the world in 2025, over 154 companies have started using Apache SpamAssassin as Email Spam Protection tool.

CustomersEmployee RangeCityRegionCountrySocial Links
Rutgers University10,000+New BrunswickNew JerseyUnited States
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Hewlett Packard Enterprise10,000+SpringTexasUnited States
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KPN10,000+The HagueSouth HollandNetherlands
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TÜBİTAK10,000+AnkaraAnkaraTurkey
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University Of Toronto10,000+TorontoOntarioCanada
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Venture Corporation Limited10,000+SingaporeCentral SingaporeSingapore
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Google10,000+Mountain ViewCaliforniaUnited States
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Serco10,000+HookEnglandUnited Kingdom
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Brasil Telecom10,000+BrasiliaFederal DistrictBrazil
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Broadcom10,000+Palo AltoCaliforniaUnited States
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Apache SpamAssassin Customers by Products and Services

The top three products and services offering customers that use Apache SpamAssassin for Email Spam Protection are Software Development (8), Research (7), Web Development (6).

Customers

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Apache SpamAssassin Customers by Employee Size

The majority of Apache SpamAssassin's customers for the email-spam-protection category fall in the company size of 20 - 49 employees (35 companies), 100 - 249 employees (31 companies), 0 - 9 employees (27 companies).

Employee Size

Apache SpamAssassin Customers by Geography

The top three geographies of Apache SpamAssassin for email-spam-protection are the United States with 52(47.71%), Poland with 10(9.17%), Australia with 8(7.34%) customers respectively.

Customers

Employees of Apache SpamAssassin

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Also see other Products/Services by Apache SpamAssassin in:

Email Spam Protection

FAQ

Find answers to the most often asked questions by users.

Who are the top Apache SpamAssassin competitors?

Apache SpamAssassin’s Top competitors in the email-spam-protection category are Appriver, SpamExperts Email Archiving, Carrierzone. You can view a full list of Apache SpamAssassin competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of Apache SpamAssassin and 40,000 other technologies on the internet. You can also compare Apache SpamAssassin and its feature with top competitors here : Apache SpamAssassin vs Appriver Apache SpamAssassin vs SpamExperts Email Archiving Apache SpamAssassin vs Carrierzone.

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What is Apache SpamAssassin customer distribution based on company size?

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What is Apache SpamAssassin market share in the email-spam-protection?

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What are the top countries that use Apache SpamAssassin?

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What are the top industries that use Apache SpamAssassin?

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