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

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

Peer-Reviewable Core   Agentless Sync   No Mail Rerouting   Sovereign Cloud Ready

Put an End to Manually Managing Signatures and Out-of-Office Replies

Every signature and out-of-office reply represents your organization. Keep them accurate, consistent, and up to date without relying on individual users or recurring IT effort.

Turn every email into a powerful marketing channel by automating signature management. IT handles the initial implementation and governance, while Marketing independently creates and manages signature content, campaign banners, event promotions, and brand messaging.

Every employee and mailbox automatically receives current, centrally governed signatures, delivering consistent branding, organization-wide campaign visibility, and effortless compliance.

Retain control of your data and email flow without synchronizing directory data with an external provider, rerouting emails, phoning home, transferring telemetry data, or requring new infrastructure. The sovereign architecture of Set-OutlookSignatures enables capabilities that other solutions cannot readily offer.

⚡ Set-OutlookSignatures Free and open-source Centralized signature management Classic Outlook for Windows and simulation mode Exchange on-premises, hybrid, and all Microsoft 365 clouds Proven and innovative, with a rich feature set and plenty to learn from the code

⭐ Benefactor Circle add-on Commercial extension preserving the core’s sovereign architecture All Outlook editions and platforms: Classic and New, Mac, iOS, Android, Web Centralized out-of-office reply management Time-based campaigns, shared mailboxes, delegate support, SimulateAndDeploy, and additional enterprise features More capabilities at a lower cost than competitors and even manual updates

 

     

 

Security-conscious and brand-aware organizations worldwide trust our solution, in public as well as in national, sovereign and local Microsoft 365 clouds such as GCC, GCC High, DoD, China, Bleu, and Delos.

The Strengths of the Ecosystem

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.

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

 

See it in Action

Choose a self-guided technical evaluation or schedule an interactive walkthrough tailored to your organization.

     

 

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