2026-06-11
Set-OutlookSignatures, the Benefactor Circle add-on and the Outlook add-in are now available in version 4.29.0. This update introduces critical security continuity measures, enhanced compliance documentation, and several internal robustness fixes to keep your deployments running smoothly.
🔗Code-Signing Certificate Update (Annual Rotation)
Thanks to a generous donation from our partner ExplicIT Consulting, our Enterprise Validated (EV) code-signing certificate has been renewed.
- Action Required: If your endpoint security software (such as AppLocker, Microsoft Defender, or CrowdStrike) is strictly locked to our previous certificate, please update your configuration rules to accept the new one.
- Future Changes: To comply with updated industry-wide Certificate Authority (CA) guidelines, this certificate will now be rotated annually.
- Better Appending: The update process now appends ExplicIT’s certificate instead of replacing existing ones, ensuring original certificates from Microsoft or the .NET Foundation remain fully intact.
🔗New Security Questionnaire & Resources
To streamline internal IT and compliance reviews, we have added a dedicated Security Questionnaire section to our documentation. It provides clear answers to standard security and data privacy questions.
Additionally, we’ve included links to our latest deep-dive articles:
- Simulation Mode: Goodbye Rollout Panic: How to Test Outlook Signatures & Out-of-Office Notes Without Accessing Live Mailboxes
- Summer Campaigns: Hot Tips for Cool Signatures: How to Make Your Summer Campaigns Shine
🔗Key Robustness & Fixes
- Assembly Resolver Update: Resolved an issue where DLL files downloaded from the web with the "Mark of the Web" restriction could not be loaded.
- OutlookSignatureName priorization: Fixed the
OutlookSignatureNamebehavior in the INI configuration to prevent overwriting signature names already assigned to higher-priority mailboxes. - Dependency Upgrades: Bumped underlying libraries including MSAL.Net, libphonenumber-csharp, and msal-browser.
🔗Get the Update
- Set-OutlookSignatures: Download the latest version from our official Download Site.
- Benefactor Circle Customers: Your updated add-on components and custom download links are being sent directly to you via email.
🔗Turn every small email moment into a professional advantage
Email signatures and out-of-office replies may seem minor, but think about how often people see them.
We help organizations centrally manage and standardize these touchpoints across all users — unified Outlook branding everywhere, with zero external data exposure. No manual effort, no inconsistencies, no data leaving your environment. With Set-OutlookSignatures, every email becomes a consistent, secure, and fully controlled brand experience.
👉 See what’s possible for your email setup
→ See how it works (2 min)
👉 Want to try it yourself?
→ Quickstart
Not responsible for email setup in your company?
Share this page with your IT department or marketing team, they’ll thank you for it.