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Guide · Office and email

How to add a signature with a logo in the Outlook app on iPhone and Android

By Blink Brief · Updated  · How pages are made

In the Outlook app on iPhone or Android, open Settings, tap Signature under Mail, and type your signature; switch on Per Account Signature to give each account its own. For the logo, Microsoft's message MC1437668 describes an Insert image button in the signature editor with two choices: Choose from photo library, which it calls the existing behavior, and Choose from files for images in OneDrive, rolling out from late September to late October 2026. The app embeds the picture in the signature, so put a small copy of your logo in your photos first.

Short answer

  1. Make a small PNG of your logo with the tool below. On an iPhone, touch and hold the picture it shows and tap Save to Photos.
  2. In the Outlook app: Settings › Signature, under Mail.
  3. Type your name and details, tap Insert image, choose Choose from photo library, and pick the logo.
  4. Save, then send yourself a test at an address outside Outlook.

Where the signature setting is, on iPhone and on Android

Microsoft's page for Outlook for iOS and Android gives one set of steps for both: "Open Settings. Under Mail, tap Signature. Enter your signature or switch the toggle to enable Per Account Signature, and then enter signatures for each of your accounts."

Microsoft's page doesn't say where Settings is. Simon Fraser University's IT guide for both apps does:

  1. "Tap on your profile icon in the upper left."
  2. "Tap on the gear icon on the lower left to open Settings."
  3. "Under Mail, tap Signature."
  4. "Tap the signature to create or edit it."
  5. "Tap the checkmark on the upper right to save your changes."

On an iPhone the box often holds "Get Outlook for iOS" until you change it. Delete it and type your own.

Add your logo with Insert image, and which app version has it

Microsoft's support page for the app's signature doesn't mention pictures. The steps come from its message to Microsoft 365 admins, MC1437668, published July 23 and updated August 28, 2026: "Selecting Insert image in the signature editor will present":

  • Choose from photo library, "to select an image from the device, which remains the existing behavior."
  • Choose from files, "to browse and select image files that are stored in OneDrive." This is the new part, rolling out "Beginning in late September 2026" and "expected to complete by late October 2026", for Outlook for iOS and Outlook for Android.

So, in the signature editor:

  1. Type your name, title and phone number.
  2. Put the cursor where the logo goes and tap Insert image.
  3. Tap Choose from photo library and pick your logo, or Choose from files if it's in OneDrive.
  4. Save the signature.

Microsoft: "Selected images are downloaded and embedded into the signature, consistent with the current behavior for locally stored images." The logo travels inside each email, so the reader's app doesn't need to load it from the web. Microsoft adds that "Existing signatures are not modified" and that the change needs no admin setup.

If you don't see Insert image

  • Update the app from the App Store or Google Play. The OneDrive choice arrives with the rollout that Microsoft expected to finish by late October 2026, and its roadmap entry, 568079, was still marked "In development" on 3 November 2026.
  • No OneDrive account in the list: Microsoft says the OneDrive accounts on offer "are determined by your organization's existing cross-account data-sharing policies." Use Choose from photo library instead.
  • The logo isn't in the picker: "The file picker displays only image files", so a PDF or a Word file with the logo in it won't show. Save the logo as a PNG.

If the button still isn't there, keep a text signature for now. For a Gmail address, the Gmail app sends your computer signature with its logo when you leave its Mobile Signature off: see the Gmail app guide.

One signature per account

Microsoft: "Yes, you can change your signature for each account or have one signature for all of your accounts." With Per Account Signature off, one signature goes on mail from every account in the app. Switch it on to enter a signature for each account: a work signature with the logo, and a short one for a personal address.

Get a logo image of the right size onto your phone

The app embeds the file you pick as it is, and Microsoft's message doesn't say whether the app shrinks it. A logo straight from a designer can be thousands of pixels wide, so start with a copy at the height you want in the signature: 40 to 80 pixels suits most logos. Crop away empty space first, because it counts toward the height.

Make a small PNG of your logo

To do it by hand:

  1. Open the logo in an image editor and crop away the empty border.
  2. Resize it to the height you want in the signature, such as 60 pixels, keeping its proportions.
  3. Save it as a PNG, send it to your phone, and save it to your photos.

Does the computer signature sync to the phone?

Microsoft's roaming signatures feature is about Outlook for Windows: "Email signatures in Outlook for Windows now roam across devices," from "Outlook build 2303 or higher", for mailboxes on Microsoft 365 or Outlook.com. Microsoft's page for the phone apps describes only the Signature setting in the app and says nothing about syncing. Set the signature up on the phone, and keep it in step with your computer by hand.

For the computer half, the free Email Signature generator makes a signature to paste into Outlook on Windows, Mac or the web, and the Gmail and Outlook guide has Microsoft's steps for each version.

What recipients see

  • The logo travels in the email. Classic Outlook's picture blocking is for "automatic picture downloads from the Internet", so it doesn't hold back an embedded logo the way it holds back a linked one.
  • Some apps show it as an attachment. An embedded picture is a file in the email, and many apps list such files with the attachments, even when the logo also shows in the signature.
  • Every email gets bigger by the size of the logo file, which is one more reason to use a small PNG.

Send a test to a Gmail and an iCloud address and look at both. Why a signature logo isn't showing explains linked and embedded logos, app by app. If you also send from the iPhone's own Mail app, the iPhone Mail guide covers its text-only signature.

Questions

Can you add a picture to your Outlook signature on iPhone?

Yes. Microsoft's message MC1437668 describes Insert image in the signature editor of Outlook for iOS and Android, with Choose from photo library, which it calls the existing behavior, and Choose from files for OneDrive, rolling out from late September to late October 2026. The picture is embedded in the signature.

Why is my Outlook mobile signature image not showing?

If it's missing in the app, update the app and check that you're editing the right account's signature with Per Account Signature. If it's missing for the person you wrote to, their app may list the embedded logo as an attachment instead of showing it in the signature. Why a signature logo isn't showing goes through each app.

Does the Outlook app signature sync with desktop?

Microsoft doesn't say it does. Its roaming signatures article covers Outlook for Windows, and its page for the phone apps describes only the Signature setting in the app. Set the signature up on the phone.

How do I remove "Get Outlook for iOS"?

It's the signature the app starts with. Open Settings, tap Signature under Mail, delete the text, and type your own signature, or leave the box empty.

How do I add an image signature in the Outlook app on Android?

The same way as on iPhone: Microsoft's steps apply to both apps. Open Settings, tap Signature under Mail, then use Insert image in the signature editor and choose a picture from your photos, or from OneDrive once the October 2026 update reaches your app.

Sources

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