Self-Hosted Email Server

Alternatives to Mail-in-a-Box

Compare healthier or more active tools in the same use case using ToolVitals public evidence.

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Why compare

Signals behind this alternatives page

ToolVitals does not score proprietary or unknown-license tools because their public source evidence is not comparable to open/source-visible projects.

Switching guide

Best alternatives by need

Best overallModoboa

Highest organic ToolVitals fit for this use case.

Healthier optionsModoboa, Mailu, KumoMTA, gromox

Stronger current public-health signal than Mail-in-a-Box.

Verified open/source-visibleModoboa, Mailu, KumoMTA, gromox

Useful when portability and inspectability matter.

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Ranked alternatives