Add or update existing email signature from a computer
- Open Gmail
- In the top right, click Settings
Settings.
- In the "Signature" section, add your signature text in the box. If you want, you can format your message by adding an image or changing the text style.
- At the bottom of the page, click Save Changes.
Add or update existing email signature from iOS device
- On your phone or tablet, open the Gmail app
.
- Tap the Menu
.
- Scroll to the bottom, then tap Settings.
- Tap your account.
- Tap Signature settings.
- Switch the "Signature" setting on.
- Add or edit your mobile signature.
- To save, tap Back
.
More help can be found at the Google Gmail help page.
https://support.google.com/mail/answer/8395?co=GENIE.Platform%3DDesktop&hl=en&oco=1