Postfix
Postfix is a free and open-source mail transfer agent (MTA) that routes and delivers email. Postfix is the default Mail Transfer Agent (MTA) in Ubuntu...Read more
Market Share of Postfix
Current Customer(s)
1318
Market Share (Est.)
0.01%
Ranking
#31
Top Competitors and Alternatives of Postfix
The top three of Postfix’s competitors in the Hosted Email category are Microsoft Outlook with 39.78%, Microsoft Exchange Online with 39.13%, 1&1 Email with 4.34% market share.
Popular Comparisons
Top Competitors and Alternatives of Postfix
The top three of Postfix’s competitors in the Hosted Email category are Microsoft Outlook with 39.78%, Microsoft Exchange Online with 39.13%, 1&1 Email with 4.34% market share.
Postfix vs Microsoft Outlook
Postfix vs Microsoft Exchange Online
Postfix vs 1&1 Email
Postfix vs Strato
Postfix vs SiteGround Email Hosting
Postfix vs Zoho Mail
Postfix vs One.com Email Hosting
Postfix vs Rackspace Email
Customers of Postfix
Around the world in 2026, over 1299 companies have started using Postfix as Hosted Email tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| ROYALE BUSINESS CLUB INTERNATIONAL, INC. | 10,000+ | Quezon City | Metro Manila | Philippines |     |
| Infor | 10,000+ | New York City | New York | United States | |
| Ho Chi Minh City University Of Technology | 10,000+ | Ho Chi Minh City | Ho Chi Minh City | Vietnam | |
| Rakuten Rewards | 10,000+ | San Mateo | California | United States | |
| Inetum | 10,000+ | Saint-Ouen | Ile-de-France | France | |
| BT Group | 10,000+ | London | England | United Kingdom | |
| Constellation Software, Inc. | 10,000+ | Toronto | Ontario | Canada | |
| Capgemini | 10,000+ | Paris | Ile-de-France | France | |
| Organización Carvajal | 10,000+ | Cali | Valle del Cauca | Colombia | |
| NTT DATA | 10,000+ | Tokyo | Tokyo | Japan | |
Uncover hidden demand and identify accounts ready to buy with 6sense Intent Data.
Postfix Customers by Products and Services
The top three products and services offering customers that use Postfix for Hosted Email are Cloud Services (48), Software Development (39), Cybersecurity (32).
Customers
Download the 6sense Chrome Extension to get verified contact data of Postfix employees
Install Now
Postfix Customers by Employee Size
The majority of Postfix's customers for the hosted-email category fall in the company size of 100 - 249 employees (305 companies), 20 - 49 employees (215 companies), 10,000+ employees (202 companies).
Employee Size
Postfix Customers by Geography
The top three geographies of Postfix for hosted-email are the United States with 401(44.80%), India with 134(14.97%), Brazil with 89(9.94%) customers respectively.
Customers
Employees of Postfix
Also see other Products/Services by Postfix in:
FAQ
Find answers to the most often asked questions by users.
Who are the top Postfix competitors?
Postfix’s Top competitors in the hosted-email category are Microsoft Outlook, Microsoft Exchange Online, 1&1 Email. You can view a full list of Postfix competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of Postfix and 40,000 other technologies on the internet. You can also compare Postfix and its feature with top competitors here : Postfix vs Microsoft Outlook Postfix vs Microsoft Exchange Online Postfix vs 1&1 Email.
What is Postfix customer distribution based on company size?
What is Postfix market share in the hosted-email?
What are the top countries that use Postfix?
What are the top industries that use Postfix?
Get everything in one place
Close deals faster by understanding your clients well. Know their technology stack, contract renewal date, top decision-makers, hiring trends, and top company news in one place.
Get a demoGet instant access to B2B contact data across the web
Sign Up Today
