Set-OutlookSignatures v4.30.0: Powerful Outlook Add-in Launch Events & Smarter Deployments

2026-06-14

Set-OutlookSignatures, the Benefactor Circle add-on, and the Outlook add-in are now available in version 4.30.0. This release brings massive capabilities to our Outlook add-in with new event-driven triggers, safeguards for your deployment process, and key stability fixes.

🔗Outlook Add-in: New Launch Events & Automation

We have significantly expanded the automation capabilities of the Outlook add-in by introducing support for several highly requested launch events. These events allow you to enforce and adapt signatures dynamically based on user actions:

• OnMessageSend & OnAppointmentSend: Enforces a specific signature right after the user clicks "Send", completely overriding manual changes. The signature is applied client-side, ensuring the sender can see the final result directly in their Sent Items folder.
• OnMessageCompose & OnAppointmentOrganizer: Triggers when composing emails or managing appointments, including when editing drafts or existing calendar items.
• OnSensitivityLabelChanged: Enables dynamic signature assignment based on the item's sensitivity label via CUSTOM_RULES_CODE (requires a mailbox with at least an E5 license).

💡 Note: All new launch events are disabled by default and can be manually enabled in run_before_deployment.ps1. To keep Outlook running fast, our optimized manifest.xml generation now automatically excludes any unused launch events to prevent unnecessary UI messages.

🔗Smarter Deployment & Custom Rules

To make deployments safer and rule-bending more flexible, we've upgraded our tooling and scripting properties:

• Manifest Guardrails: run_before_deployment.ps1 now displays configuration differences between your new local manifest.xml and the online version, and will actively warn you if your local version number is lower than what is currently live.
• Expanded customRulesProperties: When writing CUSTOM_RULES_CODE, you can now utilize triggeredByLaunchEventName to detect what started the script, alongside sensitivityLabelGuid and sensitivityLabelName to react to data classification changes.

🔗Core Enhancements & Fixes

• PowerShell 5.1 Compatibility: Corrected the assembly resolver code in sample code\SimulateAndDeploy.ps1 to ensure it works reliably across all PowerShell 5.1 environments.
• Documentation Update: Updated the FAQ section on how to Keep users from adding, editing and removing signatures.

🔗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
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