What is the best way to append a message to the end of all company signatures without updating each one manually?
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How can we append messages to all signatures in organization
Best answer by JohnW
Organization-wide Email Headers / Footers
ARE Possible!
Organizations that use Exchange / Microsoft 365 for their email server, can configure their email server to append an email 'header/footer' to every outbound email! This footer can contain a privacy disclaimer, marketing message, holiday greetings, etc.
Here is a link to the Microsoft article on how to enable this function:
Organization-wide disclaimers, signatures, footers, or headers in Exchange Server | Microsoft Learn
See Example below:

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