How to Add Email Signature in Gmail on Phone: Full Guide

To learn how to add an email signature in Gmail on your phone, open the Gmail app, tap the three-line menu icon in the upper left, scroll down to Settings, select your account, and tap Signature settings or Mobile Signature. Type or paste your desired text, then save your changes. This instantly attaches your sign-off to every new message and reply you send from your mobile device.

Which Gmail mobile signature method should you pick?

Before setting things up, decide whether you need plain text or rich formatting with logos and clickable icons. The official Gmail mobile app handles text easily, but it has strict technical limits.

Requirement	Best Method	Image & Link Support
Quick text-only sign-off (name, title, phone)	Gmail App Settings (iOS / Android)	Plain text only; standard URLs auto-link
Branded layout with logo, social icons, and colors	AtomnyX Email Signature Generator via Desktop or Apple Mail	Full HTML table support, base64 or hosted images, custom colors
Unified signature across all desktop and web sessions	Gmail Web Settings (Desktop browser)	Rich text, embedded logos, custom web-safe fonts

The Gmail mobile app for both iOS and Android only supports plain text in its local signature field. If you paste an image or rich HTML table into that field, the app strips out the graphics and table structure. If you need a polished layout with your company logo, headshot, and stylized text, build your layout using the AtomnyX Email Signature Generator on desktop or sync your Gmail account through an email client that supports mobile rich text.

How to add an email signature in the Gmail app on iPhone

If you only need your contact details and a simple sign-off, configure the native iOS Gmail app directly. These steps apply to any modern iPhone running the official Gmail application.

1. Open the Gmail app on your iPhone.
2. Tap the menu icon (three stacked horizontal lines) located in the search bar at the top left.
3. Scroll down to the bottom of the sidebar and tap Settings.
4. Under the Accounts heading, tap the specific email account you want to edit.
5. Tap Signature settings.
6. Switch the Mobile Signature toggle to the on position (it will turn blue).
7. Tap the text box underneath and type your signature. You can include your name, job title, company name, phone number, and website address.
8. Tap the back arrow in the top left corner to save your changes and exit.

Once enabled, Gmail will automatically append this text block to the bottom of every email drafted within the iOS app.

How to add an email signature in the Gmail app on Android

Setting up your signature on an Android phone follows a similar path. The Android app stores signatures per account, so if you manage personal and work accounts on one device, you can set distinct signatures for each.

1. Open the Gmail app on your Android phone.
2. Tap the menu icon (three lines) in the top-left corner of your screen.
3. Scroll down and select Settings.
4. Tap the Google account you want to update.
5. Scroll down through the account preferences to the General section and tap Mobile Signature.
6. Type your signature into the pop-up text box. You can press the Enter key on your keyboard to create clean line breaks between your name, title, and phone number.
7. Tap OK to confirm and save your signature.

Test your signature immediately by tapping Compose. Your text should automatically appear in the message body.

How to add an image email signature for Gmail on your phone

Because the official Gmail mobile app ignores embedded images and HTML tables, you cannot paste a photo or logo straight into the app settings. However, you can achieve a branded signature on mobile using two reliable workarounds.

Method 1: Connect your Gmail account to Apple Mail (iOS)

The default Mail app on iOS supports rich HTML signatures, unlike the Gmail app. If you link your Gmail address through your iPhone settings, you can carry over formatted tables, social badges, and headshots.

1. Create your layout using the AtomnyX HTML signature generator. Choose from three clean templates, insert your accent colors, add your contact details, and upload your logo.
2. Click Copy to Clipboard to copy the rich text output.
3. Send an email to yourself containing that copied signature, open the email on your iPhone, and select and copy the signature block.
4. Open the Settings app on your iPhone, tap Mail, and tap Signature at the bottom.
5. Tap inside the text box for your Gmail account and select Paste.
6. Gently shake your iPhone to trigger the Undo Change Attributes prompt, then tap Undo. This prevents iOS from stripping out the inline styling and font sizes.

Before uploading your image, prepare the file properly. Keep logos under 300 pixels wide so they load quickly on mobile screens. If your image file is too heavy, pass it through an Image Compressor to strip unnecessary metadata and keep message sizes small. You can also review our comparison of JPG vs PNG to choose the sharpest format for your company logo.

Method 2: Use Gmail on your computer for rich signatures

The standard way professionals manage rich signatures is by setting them up on the web version of Gmail. When you send emails from a desktop or laptop, Gmail loads full HTML tables, logos, and links.

1. Log in to Gmail on your desktop browser.
2. Click the Settings gear in the upper-right corner, then click See all settings.
3. Stay on the General tab and scroll down to the Signature section.
4. Click Create new, give the signature a name, and click into the compose area.
5. Paste your rich text signature using Ctrl+V on Windows or Cmd+V on Mac.
6. Scroll to the bottom of the page and click Save Changes.

If you need to crop an awkwardly proportioned headshot or company icon before pasting, run it through an online tool to crop image online so it aligns evenly with your text rows.

How to change or remove a signature in Gmail on your phone

When you switch jobs, get a new phone number, or want to stop broadcasting "Sent from my phone," updating or removing the text takes just a few seconds.

1. Open the Gmail app on your device.
2. Tap the three lines at the top left, scroll down, and tap Settings.
3. Tap your email account name.
4. Tap Signature settings (iPhone) or Mobile Signature (Android).
5. To update the signature, edit the text inside the box.
6. To delete the signature completely, clear all characters out of the text field so it remains blank. On iPhone, you can also toggle the Mobile Signature switch off.
7. Save or back out of the menu. Outgoing emails will now reflect the new text or omit the signature entirely.

Troubleshooting common Gmail mobile signature problems

Email formatting can behave erratically across different devices and operating systems. Here is how to resolve the most frequent issues.

The mobile app stripped out my logo and table borders

The Gmail mobile app parser automatically strips HTML table tags, inline CSS styling, and image tags from its local signature field. It only stores raw strings of text. If you must send branded HTML signatures from a mobile device, use the default Apple Mail app connected via IMAP to your Google account, or compose critical client messages from your computer.

My logo appears as an empty box or attachment

The AtomnyX signature tool embeds your logo as a base64 data URI directly inside the code. This prevents broken image links across webmail platforms like Gmail, Apple Mail, and Thunderbird. However, some desktop versions of Outlook block base64 strings by default until the recipient clicks to display images. If this affects your clients, upload your logo to your own web server and link the direct image URL instead.

Two signatures appear on the same email

This happens when you draft an email using a desktop browser or mobile web interface while an automated add-on or local client appends a second block. Remember: the mobile signature set in your Gmail phone app only triggers when you send from that specific phone. If you see duplicates, verify that you have not typed a signature manually while an automatic signature is already enabled in settings.

The text font looks mismatched on other phones

Email platforms do not download custom web fonts via CSS. If a signature relies on unusual fonts, recipient devices will substitute their local default font, often disrupting line heights and spacing. Always use universal web-safe fonts such as Arial, Helvetica, or standard sans-serif stacks so your signature renders predictably everywhere.

Frequently Asked Questions

How do I add an email signature in Gmail on my phone with an image?

The official Gmail phone app does not permit image uploads or rich HTML within its local mobile signature settings. To send an email signature containing an image from your phone, connect your Gmail account to the iOS Mail app, generate a formatted signature with an embedded logo, and paste it into the iOS signature settings.

Why is my Gmail mobile signature different from my computer signature?

Google maintains separate signature settings for the Gmail web interface and the mobile app. The web interface supports full HTML tables, custom colors, links, and images. The phone app uses a standalone, plain-text field that works offline and keeps outgoing mobile data usage low. Updating your signature on your computer does not automatically update the mobile signature on your phone.

Can I format links or text color in the Gmail mobile app signature?

No. The signature editor inside the Android and iPhone Gmail apps only supports unformatted plain text. You can type full URLs (like https://example.com), and the recipient's email client will automatically turn them into clickable links, but you cannot create hyperlinked anchor text or change font colors directly within the mobile app settings.

Is my personal data safe when generating an HTML signature?

When you use the Free Email Signature Generator at AtomnyX, all data processing takes place directly in your web browser using client-side JavaScript. Your contact details, phone numbers, and uploaded image files are never transmitted to our servers or stored in any database. Once you close or reload the browser tab, that temporary data is completely cleared.