Paubox alternatives (2026)

7 email encryption tools listed alongside Paubox for side-by-side comparison on capabilities, pricing, and deployment. No editorial ranking.

Why look for Paubox alternatives?

Paubox is a strong option for email encryption, but it's not the right fit for every team. Common reasons teams look elsewhere: premium pricing for smaller practices; less granular sender control than end-to-end solutions.

Below we list 7 alternatives, broken down by deployment model. All data is aggregated from official documentation and community feedback.

Head-to-Head Comparisons

Paubox vs VirtruPaubox vs Zix (OpenText)Paubox vs EgressPaubox vs Proton Mail BusinessPaubox vs LuxSciPaubox vs EchoworxPaubox vs Tuta

Open Source Alternatives to Paubox

Proton Mail Business

OSS

Swiss-hosted zero-access encrypted email with the strongest privacy protections

Cloud

Per-user

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Tuta

OSS

Open-source end-to-end encrypted email with zero-access architecture

Cloud

Per-user

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Cloud-Managed Alternatives

Virtru

End-to-end encryption for Gmail and Outlook with persistent sender control

Cloud

Per-user

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Egress

Adaptive, AI-driven email encryption that adjusts protection based on risk

Cloud

Per-user

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Proton Mail Business

OSS

Swiss-hosted zero-access encrypted email with the strongest privacy protections

Cloud

Per-user

View details

LuxSci

Combined HIPAA-compliant email hosting and encryption with multiple delivery methods

Cloud

Per-user

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Tuta

OSS

Open-source end-to-end encrypted email with zero-access architecture

Cloud

Per-user

View details

Self-Hosted Alternatives

Zix (OpenText)

Enterprise email encryption with the larger install base and policy-based automation

CloudSelf-hosted

Per-user

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Echoworx

Enterprise email encryption platform with seven delivery methods and brandable portals

CloudSelf-hosted

Per-user

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