Data-Sovereign Email Signatures and Out-of-Office Replies

Your branding across every Outlook platform, with zero external data exposure

IT integrates the solution, while Marketing independently creates and manages content and campaigns – both using familiar tools. Every employee and mailbox automatically receives the correct signatures and out-of-office replies. Emails are not rerouted, and all data remains in systems your security team already trusts.

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Set-OutlookSignatures

Free, open-source core

Best for technical evaluation and organizations using Classic Outlook for Windows. Proven and innovative, with a rich feature set and plenty to learn from the code.

  • Centralized signature management
  • Classic Outlook for Windows
  • Simulation mode for risk-free technical evaluation
  • Exchange on-premises, hybrid, and all Microsoft 365 clouds
Signatures in Minutes: 3-Step Quickstart

For IT administrators. No signup required.

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Benefactor Circle add-on

Commercial extension with the same data-sovereign architecture

Best for organizations requiring advanced enterprise features, at lower cost than competitors and even manual updates.

  • Classic and New Outlook, Windows, Mac, Web, iOS, and Android
  • Centrally managed out-of-office replies
  • Time-based campaigns, shared mailboxes, delegate support, SimulateAndDeploy, and additional enterprise features
Book Your Personalized Demo

For decision-makers in IT, Marketing, and Security.

Security-conscious and brand-aware organizations worldwide use our solution across public, national, sovereign, and local Microsoft 365 environments, including GCC, GCC High, DoD, China, Bleu, and Delos.

🔗Everything You Need to Govern Signatures Across Outlook

From dynamic branding to governance, our ecosystem delivers capabilities that conventional provider-hosted solutions simply cannot match. Connect any data source, apply unlimited business logic, and synchronize natively across Outlook platforms without rerouting email or exposing data externally.

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Frictionless Adoption
Invisible to end users, seamless background sync. Intuitive for Marketing and IT.
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Dynamic Content
Time-based campaigns, collapse empty lines, rule-based banners.
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Simulation Mode
Dry-run your deployment logic before going live.
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Out-of-Office Replies
Manage and distribute OOF messages consistently and centrally from one location.
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Signatures Everywhere
Classic and New Outlook across Windows, Mac, Web, iOS, Android, cloud and on-premises environments.
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Enterprise Versatility
Supports shared mailboxes, delegates, and custom logic.
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Native Integration
Direct-to-mailbox synchronization, no mail flow changes required.
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Sovereign by Design
No external data transfer, no phone home, no telemetry.
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Marketing Impact
Design in Word, test-drive from your desk, and deploy brand-safe campaigns company-wide.

The Benefactor Circle license funds the open-source development, ensuring the core engine remains free and peer-reviewable for the global community.