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How to Change Email Signature on iPhone

Changing your email signature on iPhone depends on which email app you use. This guide covers the native iOS Mail app, the Gmail app, and the Outlook app — all on iPhone and iPad.

Updated: March 2026·~2 min read·Works with: iOS 16, 17, 18

Important note

Mobile email apps only support plain text signatures. For a rich HTML signature with colors, icons, and formatting, set it up on Gmail desktop or Outlook desktop. The HTML version will then appear correctly in all emails, including those sent from your iPhone.

How to Change Email Signature on iPhone — iOS Mail App

If you use the built-in Apple Mail app, your signature is managed in iPhone Settings.

1

Open the Settings app

Find and open the Settings app on your iPhone home screen (the grey gear icon).
2

Scroll down and tap Mail

Scroll down past the main Apple apps section and tap Mail.
3

Tap Signature

Scroll to the bottom of the Mail settings and tap Signature.
4

Choose: All Accounts or Per Account

You can set one signature for all email accounts, or a different signature for each account. Tap Per Account to customize individually.
5

Edit your signature

Tap in the text field and edit your signature. Type your new content.
6

Go back to save

Tap the back arrow (top left). iOS saves automatically.

How to Change Email Signature in Gmail App on iPhone

1

Open the Gmail app

Tap the Gmail app on your iPhone.
2

Open the menu

Tap the three horizontal lines (hamburger menu) in the top left corner.
3

Go to Settings

Scroll down in the menu and tap Settings.
4

Select your account

Tap the Gmail account whose signature you want to change.
5

Tap Mobile Signature

Scroll down and tap Mobile Signature.
6

Edit and save

Clear the existing text and type your new signature. Tap OK.

How to Change Email Signature in Outlook App on iPhone

1

Open the Outlook app

Tap the Outlook app on your iPhone.
2

Tap your profile photo

Tap your profile photo or initials in the top left corner of the inbox view.
3

Open Settings

Tap the gear icon at the bottom left of the sidebar to open Settings.
4

Tap Signature

In the Settings list, scroll down to your email account and tap Signature.
5

Edit your signature

Clear the existing content and type your new signature. Tap the checkmark (top right) to save.

Get a Rich HTML Signature on Mobile (The Proper Way)

Mobile email apps strip HTML formatting from signatures. If you want your professional HTML signature (with colors, icons, and your photo) to appear in emails you send from your iPhone, do this instead:

  1. 1.Create your signature in SignForge on a desktop browser.
  2. 2.Copy and paste it into your email client's desktop signature settings (Gmail or Outlook web/desktop).
  3. 3.When you send emails from your iPhone using Gmail or Outlook apps, the HTML signature set up on desktop will be used — the mobile app just appends it automatically.

This is the standard approach used by professionals to maintain a consistent, beautifully formatted signature across all devices.

Related Guides

Create a Professional Email Signature for All Your Devices

Design it in SignForge, set it up in Gmail or Outlook, and it works on your iPhone automatically.

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Works with Gmail, Outlook, Apple Mail & more