Finally, since October 2022 it is possible: to synchronize signatures between local Outlook, Outlook for Web and the One Outlook App. The nice thing about it is that if you use the local Outlook on a new device, your signatures will be synchronized to it.
This is a huge relief and saves me some scripts that I currently distribute in different MEM environments. With this synchronization, I no longer need any outsourcing that copies the signatures to the user's OneDrive (and back again).
Table of Contents
- Announcement Microsoft Roadmap
- Behavior in Outlook for Web
- Behavior in local Outlook
- Behavior in One Outlook App
- Behavior in the Outlook Mobile App
Announcement Microsoft Roadmap
Here is Microsoft's official announcement about the change: Microsoft 365 Roadmap | Microsoft 365
The roll-out runs on Office installations with the "Current Channel" and the preview.

Behavior in Outlook for Web
To view the new settings and to create additional signatures, log in to the Outlook for Web and navigate to the settings to "Show all Outlook settings".
Here under "Compose and Reply" you can now edit the existing signature or add additional ones. In my case there are currently two signatures, one for German and one for English answers.

When you add a new one, don't forget at the bottom"Save on computer" button, otherwise the signature will not be created / modified.
Behavior in local Outlook
Woohoo! The signatures are also visible in the local Outlook and are compared.
To retrieve them in the settings, you navigate via "file" in the "Options". There under "e-mail", "signatures..." you will then find a similar view as online.
In the signatures we can already see the ones we have in the cloud.

Behavior in One Outlook App
The signatures are also visible in the "One Outlook App". But this was to be expected since it is based on the web version.

Behavior in the Outlook Mobile App
Unfortunately, it is currently not possible to synchronize signatures on iOS or Android devices with the Outlook app.
Very interesting article, I will be using it on my emails from now on, thanks Florian for sharing! Cheers Mister Paton.
Very helpful & informative article. I had a question: Does this new change from Microsoft apply to shared mailboxes across multiple users?
Thanks 🙂
Cause the signatures are stored in the user, it works only for the logged-in user. (at least for now)
I love the colour scheme of your site!
Ich habe 3 Arbeitsstationen (PC) und möchte auf jeder Station eine andere Signatur verwenden.
Durch die Synchronisation ist das nicht mehr möglich. Die Signatur ist auf allen PC gleich. Wie kann ich das ändern.
Falls du es deaktivieren möchtest, hast du zwei Möglichkeiten, entweder manuell via Registry oder zentral über eine Policy.
Exclaimer hat dazu einen guten Beitrag: https://legacy.support.exclaimer.com/hc/en-gb/articles/360044101112
Bei mir funktioniert das leider nicht.
Wenn ich eine Signatur in Outlook Web anlege, ist diese dann trotzdem nicht im lokalen Windows Outlook verfügbar (und auch nicht im mobilen Android Outlook).
Und umgekehrt, wenn ich eine Signatur im Windows Outlook anlege (und auch explizit auswähle, dass diese in meinem Microsoftkonto gespeichert werden soll anstatt auf meinem lokalen Gerät), dann ist die Signatur trotzdem nicht in Outlook Web verfügbar.
Ich weiß nicht, was ich falsch mache.
Hallo Marc, je nach Update Stand kann es sein, dass das Feature noch nicht vorhanden ist.
im Laufe dieses Monat sollte es beim einspielen aller Office Updates aber erscheinen.