Gmail is a great and simple program for sending and receiving all of your e-mails. If you want to use signature inside of your emails you must enable this function inside Gmail.
Let’s look at your Gmail how you can enable a signature.
The first click gear icon at the right top of the screen then click Settings link:
New windows will be displayed. Scroll down to the signature.
Enter your text for signature and with image icon, you can upload the image to your signature.
Example: Gmail signature with picture and text
Now don’t forget to save all settings with save button on the bottom of the page.
Now if you send a new e-mail inside your Gmail you will see that signature is added automatically to your e-mail address.