How to insert your digital signature in Google Docs using the drawing tool or third-party add-ons

Google Docs' drawing tool can be used to add a signature to your document, but it's more secure to use an add-on, like DocuSign or HelloSign.

How to add a signature in Yahoo Mail and include a digital signature with your messages

You can add a signature in Yahoo Mail to the bottom of every email you send and customize it using fonts, images, and more.