New hotfix release v4.20.4

Addressing changes in Microsofts roaming signatures API

2025-08-12

🔗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 response status code for https://localhost:444/owa/service.svc?action=SanitizeHtml action \u0027SanitizeHtml\u0027 is InternalServerError. ReasonPhrase:Internal Server Error'.
  • Add hints about probable root causes of empty signatures lists in the log output of the Outlook add-in.

For a comprehensive list of all changes, dependencies, and fixes, please consult the official CHANGELOG.

🔗Interested in learning more or seeing our solution in action?

Contact us or explore further on our website. We look forward to getting to know you!

new release

2026-04-08

🔗 Custom attributes and calculated data in email signatures

Most of the information used in email signatures comes directly from your directory service. But what about the data that doesn’t have a predefined field?

Most of the data that appears in email signatures is already available in your directory service. First and last names, job titles, phone numbers, office locations, company names, and even reporting lines are typically part of Exchange, Active Directory, or Entra ID by default.

That works well as long as...

2026-04-02

🔗 Are You Missing Out on the Most Overlooked Marketing Channel?

Company email signatures are viewed thousands of times each day. Learn how they can be managed and used more effectively as a communication channel.

A communication channel that already exists but is rarely managed

Every organization sends emails. And every email includes a signature.

Sales conversations, support replies, project updates, quotations, follow‑ups — all of them leave your organization with a visual and textual impression attached. Yet in many companies, email signatures are still...

2026-03-18

🔗 Why build new infrastructure just to manage signatures?

Set-OutlookSignatures runs on your existing systems, does not bring new dependencies and does not transfer any data externally.

Many solutions require new servers, connectors, or email rerouting. Set-OutlookSignatures doesn’t:

Runs on your existing systems No new dependencies No external data transfers Simple, secure, and scalable, without the overhead.

This is made possible by architecture developed from practical experience for practical use, with a focus on work simplification and...