How do I add a signature to all users in Office 365?
Select the app launcher.
Select Admin centers, and then choose Exchange.
Under Mail flow, select Rules.
Select the + (Add) icon and choose Apply disclaimers.
Give the rule a name.
Under Apply this rule, select [Apply to all messages].
How do I force a signature in Outlook?
This feature works the same in all modern versions of Microsoft Outlook: 2010, 2013, and 2016. Open a new message. From the Message Ribbon , select the Insert tab, and from the Include group, select Signature . Select Signatures from the drop-down list.
How do I create an HTML signature in Outlook?
Create a new empty signature in Outlook. In Outlook go to File > Options > Mail and click on Signatures…
Create a new empty signature.
Open the signatures folder.
Find the placeholder signature.
Insert the HTML signature.
Test your new signature.
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