2025-06-18

🔗 New release v4.20.0

Cross-tenant access and Multitenant Organizations

Cross-tenant access and Multitenant Organizations

The need for cross-tenant mailbox access—whether for a merger, acquisition, or complex organization—breaks most traditional signature solutions. Why? Because their architecture simply can't handle it. Set-OutlookSignatures solves this. Rleease v4.20.0 introduces full cross-tenant support that works seamlessly.

Encoding detection

Ever since IT came into existence,...

2025-06-26

🔗 New hotfix release v4.20.1

Corrections for cleaning up signatures

Corrections for cleaning up signatures

This hotfix resolves issues with the parameters DeleteScriptCreatedSignaturesWithoutTemplate and DeleteUserCreatedSignatures.

While DeleteScriptCreatedSignaturesWithoutTemplate did not delete obsolete signatures, the same error in the code caused DeleteUserCreatedSignatures (disabled by default) to delete even non-user signatures.

A comprehensive list of all changes, dependencies, and bug fixes can be...

2025-07-08

🔗 New hotfix release v4.20.2

Update handling of the '@' character in signatures names

Update handling of the '@' character in signatures names

Microsoft no longer allows '@' in roaming signature names as it is reserved for internal use, and Microsoft Outlook will follow soon.

This hotfix addresses this change as follws:

Add '@' to the list of invalid characters for signatures names as...

2025-07-17

🔗 New hotfix release v4.20.3

Fixes for PowerShell quirks and SimulateAndDeploy

Fixes for PowerShell quirks and SimulateAndDeploy

Add a workaround for PowerShell 5.1 not correctly converting arrays to JSON when passing them via the InputObject parameter. (#136) Fix Set-OutlookSignatures quitting with exit code 14 when using it in SimulateAndDeploy mode for Exchange Online. Add a workaround for PowerShell not reliably resolving...

2025-08-12

🔗 New hotfix release v4.20.4

Addressing changes in Microsofts roaming signatures API

Addressing changes in Microsofts roaming signatures API

Add workaround for Microsoft internal problems with roaming signatures API, which would result in the following error when uploading roaming signatures to mailboxes which are not the one of the logged-on user (especially in SimulateAndDeploy mode). The log would contain the error 'The...

2025-08-15

🔗 New release v4.21.0

New features for the Outlook add-in

New features for the Outlook add-in

New launch events and custom code support:

React to launch events OnMessageRecipientsChanged and OnAppointmentAttendeesChanged. Allow adding custom code to the add-in so you can directly influence which signature it will set. For example, you can set a specific signature… …when there are only internal...

2025-09-05

🔗 New release v4.22.0

More Outlook add-in customization

More Outlook add-in customization

The v4.22.0 release brings major changes and customization features to the Outlook add-in:

Custom rules can now set a completely customized signature body using the new customRulesResultSignatureBody property, available for Exchange Online. Added graphAccessToken and graphApiEndpoint properties to custom rules, allowing direct querying of the Graph...

2025-10-18

🔗 New release v4.23.0

Formatting address and phone number made easy

Goodbye formatting headaches with addresses and phone numbers, hello global standards

Set-OutlookSignatures v4.23.0 is here, delivering a major upgrade focused on two common - and surprisingly complex - pain points in global IT: Perfectly formatting phone numbers and postal addresses.

This release integrates world-class open-source libraries to ensure your organization's...

2025-11-26

🔗 New release v4.24.0

Easy account picture integration, launchevent control and more

Intuitive account picture integration in DOCX templates

Adding user photos to your DOCX signature templates is now significantly simpler.

You can now insert an account picture by simply adding a shape to your DOCX template, positioning it "inline with text," and setting the picture replacement variable (e.g., '$CurrentUserPhoto$') in the...

2025-12-22

🔗 New release v4.25.0

Critical update for Exchange Online and Benefactor Circle users. New signature marking, short variable names, and improved Graph API resilience.

Benefactor Circle add-on users with mailboxes in Exchange Online should update to this version as soon as possible. Microsoft will begin changing roaming signature HTML processing shortly. Update as soon as possible to avoid potential negative impact on the parameters DeleteScriptCreatedSignaturesWithoutTemplate and DeleteUserCreatedSignatures.

Streamlined signature design with shorter variables

Designing...

2026-03-09

🔗 Sovereign Cloud Support and no more EWS for Exchange Online in v4.26.0

Set-OutlookSignatures v4.26.0 introduces unique support for M365 sovereign clouds and transitions from EWS to Microsoft Graph APIs.

We are excited to announce the release of Set-OutlookSignatures v4.26.0. This update marks a significant milestone in providing the most flexible and future-proof email signature solution on the market.

With this version, we are addressing the evolving needs of highly regulated industries and government sectors by introducing native support for...