Is my Gmail mobile signature the same as my desktop signature?

No. They are completely separate. Changes to your desktop signature (in Gmail on a browser) don't affect the mobile signature, and vice versa.

Can I add an image to my Gmail mobile signature?

No. Gmail mobile only supports plain text signatures. For a signature with images and formatting, set it up in the desktop version of Gmail.

Does the Gmail mobile signature work the same on iOS and Android?

The setting location is the same, but the exact menu layout may vary slightly between iOS and Android versions of the Gmail app. The steps in this guide apply to both.

How many characters can a Gmail mobile signature be?

Gmail mobile signatures are limited to 1,000 characters. Keep your signature concise — just your name, title, company, and a key contact detail.

How to Add a Mobile Signature in the Gmail App (iOS & Android)

The Gmail mobile app has its own signature setting, completely separate from your Gmail desktop signature. It only supports plain text — no images, no HTML formatting. Here's how to set it up on iOS or Android.

Before you start

You'll need a signature to paste. Already have one? Skip to step 1.

Create your signature first →

Step-by-step setup

Open the Gmail app on your phone. Make sure you're logged into the correct Google account.

Tap the three horizontal lines (hamburger menu) in the top-left corner to open the side drawer.

Scroll down in the side drawer and tap 'Settings'.

If you have multiple Gmail accounts, tap the account you want to set a signature for.

Scroll down in the account settings until you see 'Mobile Signature'. Tap it.

Pro tip: If you don't see 'Mobile Signature', make sure your Gmail app is updated to the latest version.

Clear any existing text and type your mobile signature. Keep it short — 3-4 lines with your name, title, and a phone number work well.

Tap 'OK' or 'Save' to save your signature. Compose a new email to confirm it appears.

Common issues

Mobile signature not showing up

Confirm you're composing from the correct account. In the Gmail app, tap the account icon (top-right) to see which account is active.

HTML code showing as text

Gmail mobile signatures are plain text only. Any HTML you paste will appear as raw code. Type your signature as plain text instead.

Can't find the Mobile Signature option

Update the Gmail app. On older versions, the option may be under Settings → General settings. On newer versions it's under your specific account settings.

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Last verified: March 2026