Data Sovereign Email Signatures and Out-of-Office Replies
_{Unified Outlook branding everywhere – with zero external data exposure}

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

Trusted worldwide and proven in high-security environments: The free and open-source Set-OutlookSignatures and the Benefactor Circle add-on turn email signatures and out-of-office replies into a centrally managed business asset — without external data transfer.

By leveraging Microsoft Roaming Signatures and our own direct-to-mailbox technology, we provide the world’s only sovereign, native-sync experience that works across all Outlook editions and platforms — including Exchange Online, Hybrid, and On-Premises — silently in the background.

📣 Marketing: Design Autonomy Design in Word, save, done. Use familiar placeholders and logic to drive consistent branding without waiting for IT tickets. Test-drive using simulation mode.

🛠️ IT: Full Automation Centralized or decentralized architecture, no "man-in-the-middle" routing. Sync signatures natively across all M365 clouds, Hybrid, and On-Premises environments.

🛡️ Security: Total Sovereignty Zero external data processing. Your data and email traffic never leave your trusted boundary. Fully audit-ready.

Used by security‑conscious and brand-aware organizations worldwide. See how we compare to alternatives and review our transparent, non-renewing pricing.

Experience it in action

Organizations use our ecosystem to enforce 📣 dynamic branding, 🏛️ administrative governance, and 🧭 cross-platform data sovereignty — all without changing how users work.

Guided Walkthrough Schedule a session with our team to see how the solution adapts to your specific organizational structure, technical setup, and compliance requirements. Ideal for Security, IT, and Marketing leadership

Self-Service Quickstart Follow our 3-step process to deploy your first signatures in minutes. Peer-reviewable and production-ready. 100% Free & Open Source Core

The power of the ecosystem

Our modular architecture delivers capabilities no cloud relay solution can match. Go beyond static directory attributes by ingesting data from any source — APIs, LDAP, databases, files — and tailoring it with unlimited custom logic.

✨ Frictionless Adoption Invisible to end users, silent 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 centrally or locally before going live.
🏝️ Centralized OOF Control Standardize and reset out-of-office replies centrally, for internal and external recipients.	📱 Signatures Everywhere Windows, Mac, iOS, Android, OWA, New and Classic Outlook in perfect sync.	🏢 Enterprise Versatility Supports shared mailboxes, delegates, and custom logic.
🧩 Native Integration Direct-to-mailbox synchronization, no mail flow changes required.	🔒 Sovereign by Design No subscription, no auto-renewal, no external data transfer.	🚀 Marketing Impact Design in Word, test-drive from your desk, deploy brand-safe campaigns globally.

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