How to Set up Google Workspace user signatures in Gmail?

Adding Signature automatically

People who use Gmail for work, school, or other groups can create a personalized signature that’s automatically added to their Gmail messages. Your users can add contact information, a company logo, links, and more.

As an administrator, you can create the same signature for everyone to use. You can also let users add images from Google Drive to their signatures. Gmail signatures can have up to 10,000 characters.

The following steps describe how to add a Signature by default.

1. In the Admin console, go to Menu  > Apps > Google Workspace > Gmail > Compliance.

2.    Scroll to the Append footer setting.

3.    Click Configure or Add another rule.
4.    In the Add setting box, take these steps:

Setting option	What to do
Append footer	Enter a name for the footer setting. The setting name appears in the settings table.
For all outbound email messages, append the following footer	Enter the text you want to appear at the bottom of every message sent by people in your organization. Use the formatting tools to customize how the text appears.
Options	(Optional) By default, the footer is added only to messages sent to recipients outside your organization. To also add the footer to internal messages, check the Append the footer to messages being sent within your organization box.

5.    At the bottom of the Add setting box, click Save.

6.    Check that your new rule appears in the Append footer table.

        Changes can take up to 24 hours but typically happen more quickly. Learn more

7.     Please find the support article to get further details on the same.