Apache SpamAssassin
Apache SpamAssassin is an open source anti-spam platform giving system administrators a filter to classify email and block spam.
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.
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
Apache SpamAssassin vs SpamExperts Email Archiving
Apache SpamAssassin vs Carrierzone
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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.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Rutgers University | 10,000+ | New Brunswick | New Jersey | United States |     |
| Hewlett Packard Enterprise | 10,000+ | Spring | Texas | United States | |
| KPN | 10,000+ | The Hague | South Holland | Netherlands | |
| TÜBİTAK | 10,000+ | Ankara | Ankara | Turkey | |
| University Of Toronto | 10,000+ | Toronto | Ontario | Canada | |
| Venture Corporation Limited | 10,000+ | Singapore | Central Singapore | Singapore | |
| 10,000+ | Mountain View | California | United States | | |
| Serco | 10,000+ | Hook | England | United Kingdom | |
| Brasil Telecom | 10,000+ | Brasilia | Federal District | Brazil | |
| Broadcom | 10,000+ | Palo Alto | California | United 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
Also see other Products/Services by Apache SpamAssassin in:
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.
What is Apache SpamAssassin customer distribution based on company size?
What is Apache SpamAssassin market share in the email-spam-protection?
What are the top countries that use Apache SpamAssassin?
What are the top industries that use Apache SpamAssassin?
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