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Postfix

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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

Hosted Email
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Market Share of Postfix

Current Customer(s)

935

Market Share (Est.)

0.01%

Ranking

#32

Top Competitors and Alternatives of Postfix

The top three of Postfix’s competitors in the Hosted Email category are Microsoft Outlook with 40.31%, Microsoft Exchange Online with 39.61%, 1&1 Email with 4.04% market share.

TechnologyDomainsMarket Share (Est.)Versus page
Microsoft Outlook379166440.31%Postfix vs Microsoft Outlook
Microsoft Exchange Online372592139.61%Postfix vs Microsoft Exchange Online
1&1 Email3804464.04%Postfix vs 1&1 Email
Strato2839903.02%Postfix vs Strato
SiteGround Email Hosting2810122.99%Postfix vs SiteGround Email Hosting
Zoho Mail2065382.20%Postfix vs Zoho Mail
One.com Email Hosting1521751.62%Postfix vs One.com Email Hosting
Rackspace Email1163521.24%Postfix vs Rackspace Email
Network Solutions Email780050.83%Postfix vs Network Solutions Email
Namecheap Private Email738490.79%Postfix vs Namecheap Private Email
GandiMail511420.54%Postfix vs GandiMail
Infomaniak E-mail446520.47%Postfix vs Infomaniak E-mail
Yandex Mail416570.44%Postfix vs Yandex Mail
ProtonMail237220.25%Postfix vs ProtonMail
United Domains Email193370.21%Postfix vs United Domains Email
123-reg Email Hosting182630.19%Postfix vs 123-reg Email Hosting
Names Email Hosting181420.19%Postfix vs Names Email Hosting
FastMail179000.19%Postfix vs FastMail
Soverin159890.17%Postfix vs Soverin
Aliyun Mail146760.16%Postfix vs Aliyun Mail
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Popular Comparisons

Top Competitors and Alternatives of Postfix

The top three of Postfix’s competitors in the Hosted Email category are Microsoft Outlook with 40.31%, Microsoft Exchange Online with 39.61%, 1&1 Email with 4.04% market share.

Postfix vs Microsoft Outlook

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Postfix vs Microsoft Exchange Online

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Postfix vs 1&1 Email

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Postfix vs Strato

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Postfix vs SiteGround Email Hosting

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Postfix vs Zoho Mail

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Postfix vs One.com Email Hosting

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Postfix vs Rackspace Email

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Customers of Postfix

Around the world in 2025, over 935 companies have started using Postfix as Hosted Email tool.

CustomersEmployee RangeCityRegionCountrySocial Links
Salesforce10,000+San FranciscoCaliforniaUnited States
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Xerox10,000+NorwalkConnecticutUnited States
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IBM10,000+ArmonkNew YorkUnited States
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GLS10,000+NeuensteinBaden-WuerttembergGermany
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Amazon Web Services10,000+SeattleWashingtonUnited States
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Queensland Health10,000+BrisbaneQueenslandAustralia
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Investis Digital10,000+LondonEnglandUnited Kingdom
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NTT Data10,000+PlanoTexasUnited States
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Oracle Corporation10,000+AustinTexasUnited States
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JLR10,000+CoventryEnglandUnited Kingdom
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Postfix Customers by Products and Services

The top three products and services offering customers that use Postfix for Hosted Email are Cloud Services (29), Cybersecurity (27), Software Development (26).

Customers

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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 (168 companies), 20 - 49 employees (136 companies), 10,000+ employees (121 companies).

Employee Size

Postfix Customers by Geography

The top three geographies of Postfix for hosted-email are the United States with 334(50.84%), India with 91(13.85%), Canada with 41(6.24%) customers respectively.

Customers

Employees of Postfix

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Also see other Products/Services by Postfix in:

Hosted Email

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.

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What is Postfix customer distribution based on company size?

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What is Postfix market share in the hosted-email?

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What are the top countries that use Postfix?

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What are the top industries that use Postfix?

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