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)
1290
Market Share (Est.)
0.54%
Ranking
#26
Top Competitors and Alternatives of Postini
The top three of Postini’s competitors in the Email Security category are Proofpoint with 21.68%, SendinBlue with 11.13%, Campaign Monitor with 7.80% 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 21.68%, SendinBlue with 11.13%, Campaign Monitor with 7.80% market share.
Postini vs Proofpoint
Postini vs SendinBlue
Postini vs Campaign Monitor
Postini vs Mimecast
Postini vs Sophos Email Gateway
Postini vs Mimecast Gateway
Postini vs Zoho Campaigns
Postini vs Symantec Email Security
Customers of Postini
Around the world in 2026, over 1277 companies have started using Postini as Email Security tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Salesforce | 10,000+ | San Francisco | California | United States |     |
| Flight Centre Travel Group Limited | 10,000+ | South Brisbane | Queensland | Australia | |
| DXC Technology | 10,000+ | Ashburn | Virginia | United States | |
| EY | 10,000+ | London | England | United Kingdom | |
| MAHLE | 10,000+ | Stuttgart | Baden-Wuerttemberg | Germany | |
| General Dynamics Mission Systems | 10,000+ | Fairfax | Virginia | United States | |
| Hub International Ltd. | 10,000+ | Chicago | Illinois | United States | |
| Mphasis | 10,000+ | Bengaluru | Karnataka | India | |
| Cognizant | 10,000+ | Teaneck | New Jersey | United States | |
| Persistent Systems | 10,000+ | Pune | Maharashtra | India | |
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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 (48), Managed Services (41), Cybersecurity (38).
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 (242 companies), 1,000 - 4,999 employees (213 companies), 100 - 249 employees (181 companies).
Employee Size
Postini Customers by Geography
The top three geographies of Postini for email-security are the United States with 855(73.83%), United Kingdom with 116(10.02%), Germany with 39(3.37%) 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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