How to change your signature in the Gmail app on Android

By Abu Bakar Saadat · Reviewed by Saadat Rafiq · 2 min read · 3 steps · Published 7 October 2026

Device

Android

Shown on

Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16

App

Gmail

Real screenshots

3 of 3 steps

Checked

October 2026

Sources

1 official, linked below

Step by step

1. 

   Open Mobile signature

   Gmail, menu, Settings, tap your account and scroll to General. Mobile signature showed Not set on ours.

   Done

2. 

   Type the signature

   The box says: add a mobile signature, or leave blank to use your web signature. Plain text only, no pictures or links with other text.

   Done

3. 

   Tap OK

   New mails from the app on this phone use it from now on. We tapped Cancel, so ours stayed Not set.

   Done

About this guide

The Gmail app has its own plain-text signature, separate from the one on your computer. That is why mails from the phone can sign off differently. Our Gmail account is a real one, so addresses, senders and subjects are blurred; the only mail we touched was a test message we sent to ourselves.

The screenshots are from Chrome and the Gmail app on a Samsung Galaxy A57 5G with Android 16 and One UI 8.5, in dark mode. Both apps look the same on other Android phones; only the phone's own settings screens differ by brand.

Good to know

The signature is set per account, so each account in the app can have its own.

For a signature with a logo or links, set it on the Gmail website and leave the mobile signature blank.

In short: Gmail, Settings, account, Mobile signature: type it, OK. Blank uses the web signature.