How to Add a Signature in the Outlook App on iPhone, iPad and Android

To add a signature in the Outlook app, tap your profile picture (or account icon) at the top left, tap the Settings gear, then under Mail tap Signature. Delete the default "Get Outlook for iOS" or "Get Outlook for Android" line, type your signature and go back to save it. If you have more than one email account in the app, switch on Per Account Signature and give each account its own.

That's the whole job on paper. In practice, people run into three surprises: the signature you set up on your computer doesn't appear on your phone, the app's signature box is basically a text field, and replies sometimes go out without any signature at all. This guide covers the exact steps for iPhone, iPad and Android, then each of those problems, with what Microsoft confirms and what still doesn't work as of October 2026.

How to add a signature in the Outlook app on iPhone and iPad

1. Open the Outlook app.
2. Tap your profile picture or account icon in the top-left corner.
3. Tap the Settings gear (bottom left of the panel that opens).
4. Scroll to the Mail section and tap Signature. On a new install the row shows "Get Outlook for iOS".
5. Delete the existing text and type your signature.
6. If you use several accounts in Outlook, turn on Per Account Signature and fill in a signature for each account.
7. Tap the back arrow (<) to save and return to Settings.
8. Start a new email to check it.

On an iPad the steps are the same, though the menu panel may already be open on the left side of the screen.

How to add a signature in the Outlook app on Android

1. Open the Outlook app.
2. Tap your profile picture or account icon at the top left.
3. Tap the Settings gear.
4. Under Mail, tap Signature. A new install shows "Get Outlook for Android".
5. Delete the default text and type your signature.
6. For several accounts, turn on Per Account Signature and fill in each one.
7. Tap the checkmark if you see one, or go back to save.
8. Send yourself a test email.

How to set a different signature for each account

The Per Account Signature switch is the only signature option Microsoft documents for the mobile apps, and it's useful: if you've added your work account and a personal Outlook.com or Gmail account to the app, you probably don't want your job title on emails to your family.

With the switch off, every account uses the same signature. With it on, the app shows one text box per account. Fill in the work one with your full details and keep the personal one short, or empty.

There is no separate signature for replies in the app. The signature you set is the one used for new emails and for replies.

How to remove "Get Outlook for iOS" (or "Sent from Outlook")

The line people often remember as "Sent from Outlook" is the app's default signature. It reads Get Outlook for iOS or Get Outlook for Android and links to the app's download page.

To remove it, open Settings > Signature, delete the text and go back. If you leave the box empty, your mobile emails go out with no signature. If you turned on Per Account Signature, clear the box for each account where you don't want it.

Does my desktop Outlook signature sync to the Outlook app?

No. This question comes up again and again in Microsoft's own Q&A forum, and the answer has been consistent:

• Microsoft's roaming signatures store your signature in your Microsoft 365 or Outlook.com mailbox so it follows you between Windows PCs and Outlook on the web.
• The mobile apps aren't part of that. In November 2025 a Microsoft Q&A moderator wrote that "roaming signatures are not supported" in Outlook for iOS and Android, and a May 2026 answer repeated that roaming applies to Outlook desktop and Outlook on the web only.

So the signature you built in Outlook on your computer and the one in the app are two separate settings. When you change your job title or phone number, update both. The same goes the other way: editing the app's signature never changes your desktop signature.

Can I use images, links or an HTML signature in the Outlook app?

Here is what's known as of October 2026:

• Microsoft's documentation for the mobile signature describes only entering text and the per-account switch. It doesn't mention images, links, fonts or HTML anywhere.
• Microsoft support's position, as quoted in a 2021 Q&A answer, was that the Outlook apps for iOS and Android "do not support HTML signatures", which are needed for an image to show. We found no Microsoft announcement reversing that.
• What users report is mixed. Some iPhone users say a signature copied from a received email and pasted into the Signature box keeps its formatting and images. Others in the same threads say the images disappear, show as broken boxes, or that the paste was blocked. A May 2026 question describes exactly that: the copied desktop signature arrived on iOS without its images. On Android, reports are mostly text and links only.
• Several signature vendors write that "Outlook for iOS supports HTML, Android doesn't". We couldn't confirm that in any Microsoft source, so treat it as "may work, test it", not as a feature.

Our recommendation: use a short text signature in the app and keep the designed one on desktop and web. A clean text signature never breaks, loads instantly, and on a phone most of your emails are quick replies anyway.

If you want to try pasting a formatted signature on iPhone

It costs two minutes to test:

1. Email your finished signature to yourself and open that email in the Outlook app on your iPhone.
2. Press and hold on the signature, select all of it and tap Copy.
3. Go to Settings > Signature, clear the box and paste.
4. Go back, start a new email and send it to an address you can check on a computer, ideally a Gmail account too.
5. If the logo is missing, shows as a box with an X, or the layout collapses, switch back to a text signature.

Don't paste raw HTML code into the box. The app shows the code as text.

How to write a good text signature for mobile

A mobile signature doesn't need to copy your desktop one. It needs to tell the reader who you are and how to reach you, in four lines or fewer:

Jana Novak
Sales Manager, Example Ltd
+1 555 010 2030
example.com

A few tips that make it look intentional rather than stripped down:

• Put your name on its own line. No "Best regards" in the signature box: you'll type your sign-off in the email, and doubling it looks odd.
• One phone number, written in international format so people can tap it to call from abroad.
• Write the website without "https://www." Most email apps still turn "example.com" into a tappable link, and it's shorter.
• Skip the legal disclaimer on mobile unless your company requires it. If it does, put it on the last line.
• Use the same name, title and phone number as on desktop, in the same order, so your emails look like they come from the same person.

For more on what to include, see our guide to a professional email signature.

Workarounds if you need your full signature on mobile

If a text signature isn't enough for your work, these are the realistic options:

1. Use Outlook on the web in your phone's browser for the emails that need the full signature. Outlook on the web uses your roaming signature, logo and all. Typing in a browser is slower, so most people only do this for important first emails.
2. Save a draft with your full signature in the app. One user in a 2026 Microsoft Q&A thread described emailing the desktop signature to their phone, pasting it into a new message and saving it as a draft to reuse. It's tedious, and it depends on the paste keeping images, so test it first.
3. Send important emails from your computer. Not glamorous, but it's what most people end up doing for first-contact emails with clients.
4. Use a different mail app on your phone. If you read your work mail in Apple Mail on iPhone instead, see our iPhone email signature guide. For Gmail, see how to change your Gmail signature.

Why replies from the Outlook app sometimes have no signature

Some people find their signature on new emails but not on replies. Users in a Microsoft Q&A thread traced this to the quick-reply box at the bottom of a conversation. Their workaround: tap the expand (pop-out) button at the top right of the reply box to open the full compose screen, where the signature appears. Not everyone in that thread could reproduce it on iOS, so if expanding doesn't help, type or paste the signature into that reply manually.

How the mobile signature relates to your desktop signature

Think of it as two layers:

The practical setup most people end up with: a designed signature with logo on desktop and web, and a matching four-line text version in the app.

If you don't have the designed one yet, you can make it with Signguin, a free email signature generator that reads your logo, brand colors and contact details from your work email's website. Its live preview has a phone view, so you can check how your signature looks when recipients open your emails on their phones. Then install it on desktop with our Outlook signature guide and copy the name, title and phone lines into the app.

A penguin's outfit looks the same on land and in water. Your signature won't, on Outlook mobile, and that's fine as long as the details match.

FAQ

Where is the signature setting in the Outlook app?

Tap your profile picture or account icon at the top left, then the Settings gear. The Signature option is in the Mail section. It's the same path on iPhone, iPad and Android. If you can't find it, update the app from the App Store or Google Play: older versions laid out the menu differently.

Why doesn't my Outlook desktop signature show up on my phone?

Because they're separate settings. Outlook's roaming signatures sync between Windows PCs and Outlook on the web, but not to the iOS and Android apps, which Microsoft Q&A moderators confirmed in 2025 and 2026. Set up the signature in the app separately under Settings > Signature.

Can I add a logo to my Outlook mobile signature?

Not reliably. Microsoft doesn't document image support for mobile signatures, and a 2021 Microsoft answer said the apps don't support the HTML signatures images need. Some iPhone users get a pasted logo to stick, others don't. Test it with an email to yourself, and fall back to a text signature if the logo breaks.

How do I add a signature to replies in the Outlook app?

The app uses one signature for both new emails and replies. If a reply goes out without it, you were probably typing in the quick-reply box. Tap the expand button at the top of the reply box to open the full editor, where the signature should appear, or add it by hand.

How do I get rid of "Get Outlook for iOS" at the bottom of my emails?

Open Settings, tap Signature under Mail, delete the "Get Outlook for iOS" text and go back. Leave the box empty for no signature, or type your own. On Android the default reads "Get Outlook for Android" and is removed the same way.

Can I have different signatures for work and personal accounts in the app?

Yes. In Settings > Signature, turn on Per Account Signature. The app then shows a separate signature box for each account you've added, so your work account can carry your full details while your personal account stays short or blank.