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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)

946

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 40.39%, Microsoft Exchange Online with 39.60%, 1&1 Email with 3.95% market share.

TechnologyDomainsMarket Share (Est.)Versus page
Microsoft Outlook391551140.39%Postfix vs Microsoft Outlook
Microsoft Exchange Online383825139.60%Postfix vs Microsoft Exchange Online
1&1 Email3826253.95%Postfix vs 1&1 Email
SiteGround Email Hosting2908673.00%Postfix vs SiteGround Email Hosting
Strato2847492.94%Postfix vs Strato
Zoho Mail2181232.25%Postfix vs Zoho Mail
One.com Email Hosting1623871.68%Postfix vs One.com Email Hosting
Rackspace Email1159341.20%Postfix vs Rackspace Email
Namecheap Private Email803680.83%Postfix vs Namecheap Private Email
Network Solutions Email780000.80%Postfix vs Network Solutions Email
GandiMail513720.53%Postfix vs GandiMail
Infomaniak E-mail462570.48%Postfix vs Infomaniak E-mail
Yandex Mail425340.44%Postfix vs Yandex Mail
ProtonMail268970.28%Postfix vs ProtonMail
United Domains Email196670.20%Postfix vs United Domains Email
FastMail187250.19%Postfix vs FastMail
Names Email Hosting182380.19%Postfix vs Names Email Hosting
123-reg Email Hosting179830.19%Postfix vs 123-reg Email Hosting
Soverin176250.18%Postfix vs Soverin
Aliyun Mail160980.17%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 40.39%, Microsoft Exchange Online with 39.60%, 1&1 Email with 3.95% 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 SiteGround Email Hosting

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Postfix vs Strato

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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 946 companies have started using Postfix as Hosted Email tool.

CustomersEmployee RangeCityRegionCountrySocial Links
Stc10,000+RiyadhAr RiyadSaudi Arabia
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Equinix10,000+Redwood CityCaliforniaUnited States
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Ipsos10,000+ParisIle-de-FranceFrance
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Sears10,000+Hoffman EstatesIllinoisUnited States
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Colorado State University10,000+Fort CollinsColoradoUnited States
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Fujitsu10,000+TokyoTokyoJapan
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Ricoh Company, Ltd.10,000+TokyoTokyoJapan
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EY10,000+LondonEnglandUnited Kingdom
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UNAM10,000+Mexico CityMexico CityMexico
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IBM10,000+ArmonkNew YorkUnited States
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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), Software Development (28), Cybersecurity (24).

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 (172 companies), 20 - 49 employees (141 companies), 1,000 - 4,999 employees (121 companies).

Employee Size

Postfix Customers by Geography

The top three geographies of Postfix for hosted-email are the United States with 343(51.27%), India with 91(13.60%), United Kingdom with 41(6.13%) 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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