An email signature is text, like your contact information or a favourite quote, that's automatically added at the end of Gmail messages as a footer.
Add or change a signature
Set up a signature that is only shown for emails sent from the Gmail app.
- Open the Gmail app .
- At the top left, tap Menu .
- Scroll to the bottom, then tap Settings.
- Choose the Google Account to which you want to add a signature.
- Tap Mobile signature.
- Enter the text for your signature.
- Tap OK.