Best Mail Server Software & Apps (2025) | AppMus

Best Mail Server Apps and Services

Handpicked collection of the most popular and highly-rated Mail Server applications

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mailcow

Open Source

mailcow is a mail server suite.

iRedMail

Open Source

iRedMail is a free, OpenSource mail server.

Microsoft Exchange Server

Commercial

Microsoft Exchange Server is a mail server and calendaring server.

Postfix

Open Source

Postfix is a mail server that started life at IBM research as an alternative to the widely-used Sendmail program.

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Recently Added Mail Server Apps and Services

Latest additions to our Mail Server software collection

mailcow

Open Source

mailcow is a mail server suite.

iRedMail

Open Source

iRedMail is a free, OpenSource mail server.

Microsoft Exchange Server

Commercial

Microsoft Exchange Server is a mail server and calendaring server.

Postfix

Open Source

Postfix is a mail server that started life at IBM research as an alternative to the widely-used Sendmail program.