Update footer mail settings

PATCH {{baseUrl}}/mail_settings/footer

This endpoint allows you to update your current Footer mail settings.

The footer setting will insert a custom footer at the bottom of the text and HTML bodies. Use the embedded HTML editor and plain text entry fields to create the content of the footers to be inserted into your emails.

Mail settings allow you to tell SendGrid specific things to do to every email that you send to your recipients over SendGrid’s Web API or [SMTP