Adding an email signature in Hubspot

In your HubSpot account, click the settings settings icon in the top navigation bar.

In the left sidebar menu, navigate to General.
Click the Email tab.
In the Configure section, click Edit email signature.
Enter your signature in the text box. In the Simple editor, use the icons to format the text, insert a link, or insert an image. Or, click HTML and edit the HTML of your signature.
Click Save.