Postini
Postini is a cloud computing service that provides spam and malware email filtering with optional email archiving service.
Market Share of Postini
Current Customer(s)
746
Market Share (Est.)
0.39%
Ranking
#32
Top Competitors and Alternatives of Postini
The top three of Postini’s competitors in the Email Security category are Proofpoint with 26.95%, SendinBlue with 14.07%, Campaign Monitor with 9.41% market share.
Popular Comparisons
Top Competitors and Alternatives of Postini
The top three of Postini’s competitors in the Email Security category are Proofpoint with 26.95%, SendinBlue with 14.07%, Campaign Monitor with 9.41% market share.
Postini vs Proofpoint
Postini vs SendinBlue
Postini vs Campaign Monitor
Postini vs Mimecast
Postini vs Mimecast Gateway
Postini vs Sophos Email Gateway
Postini vs Zoho Campaigns
Postini vs Appriver
Customers of Postini
Around the world in 2026, over 739 companies have started using Postini as Email Security tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Anheuser - Busch | 10,000+ | St. Louis | Missouri | United States |     |
| Mayer Brown | 10,000+ | Chicago | Illinois | United States | |
| NTT | 10,000+ | Tokyo | Tokyo | Japan | |
| Movate | 10,000+ | Plano | Texas | United States | |
| Springs Global, U.S | 10,000+ | Fort Mill | South Carolina | United States | |
| Dell | 10,000+ | Round Rock | Texas | United States | |
| HCLTech | 10,000+ | Noida | Uttar Pradesh | India | |
| British American Tobacco | 10,000+ | London | England | United Kingdom | |
| Addus HomeCare | 10,000+ | Frisco | Texas | United States | |
| Ogilvy | 10,000+ | New York City | New York | United States | |
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Postini Customers by Products and Services
The top three products and services offering customers that use Postini for Email Security are Cloud Services (34), Managed Services (27), Cybersecurity (27).
Customers
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Postini Customers by Employee Size
The majority of Postini's customers for the email-security category fall in the company size of 10,000+ employees (142 companies), 1,000 - 4,999 employees (132 companies), 20 - 49 employees (106 companies).
Employee Size
Postini Customers by Geography
The top three geographies of Postini for email-security are the United States with 476(71.04%), United Kingdom with 62(9.25%), Germany with 35(5.22%) customers respectively.
Customers
Employees of Postini
Also see other Products/Services by Postini in:
FAQ
Find answers to the most often asked questions by users.
Who are the top Postini competitors?
Postini’s Top competitors in the email-security category are Proofpoint, SendinBlue, Campaign Monitor. You can view a full list of Postini competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of Postini and 40,000 other technologies on the internet. You can also compare Postini and its feature with top competitors here : Postini vs Proofpoint Postini vs SendinBlue Postini vs Campaign Monitor.
What is Postini customer distribution based on company size?
What is Postini market share in the email-security?
What are the top countries that use Postini?
What are the top industries that use Postini?
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