Outlook on iPhone, iPad and Android can now take a signature image from OneDrive. Until this fall, the app's signature editor offered only the photos on your phone. Microsoft added OneDrive as a second choice, planned to roll out from late September to late October 2026, so a company logo kept in OneDrive no longer has to be saved to the camera roll first.
The picture now has a second place to come from. The rest of the Outlook app's signature works as before, so send one test email before you rely on it.
What Microsoft changed, and when
Microsoft announced the change in its Microsoft 365 message center as MC1437668, "Microsoft Outlook for iOS and Android: Insert signature images from OneDrive", published on July 23, 2026. The matching roadmap entry, 568079, was created on August 4, 2026 and sums it up: "Users can now insert images into their email signature directly from OneDrive, in addition to the device photo library."
The dates moved once. The notice's update of August 28, 2026 pushed the start from late August to late September 2026, and the end from late September to late October 2026. One field in the notice's history still shows an end time of November 30, so a phone that has not seen it yet may be late in the rollout.
What the notice says the change does:
- In the signature editor, "Insert image" now offers "Choose from files" (OneDrive) next to "Choose from photo library", the option that was already there.
- The file picker shows only image files, in a grid or a list.
- The image you pick is downloaded and embedded in the signature.
- Signatures you already have are not modified.
- It is on by default, and an administrator has nothing to turn on. Which OneDrive accounts appear follows the organization's existing rules for sharing data between accounts.
It applies to Outlook for iOS and Android only. Microsoft's notice says nothing about Outlook on the web, new Outlook for Windows or classic Outlook, which keep their own signature editors.
How to add a OneDrive image to your Outlook app signature
Update the Outlook app first, from the App Store or Google Play. Then:
- Open Outlook's settings: tap the Accounts icon at the top left, then the gear.
- Under "Mail", tap "Signature". If you use "Per Account Signature", pick the account first.
- Put the cursor where the image goes and tap "Insert image".
- Tap "Choose from files", find the logo or photo in OneDrive and tap it.
- Save, then send yourself a test email (next section).
If "Choose from files" is missing, the update may not have reached your app yet. On a work phone, the OneDrive accounts you can pick from also depend on your organization's sharing rules. "Choose from photo library" still works: save the image to the phone and pick it from there.
The Outlook app guide covers the rest of the signature settings, including removing "Get Outlook for iOS" and setting a different signature for each account.
Send one test before you trust it
The image now comes from OneDrive, but the trip to the reader is the same as before. As our Outlook app guide notes, users on Microsoft's Q&A forum reported through 2025 and 2026 that a logo can look right in the Outlook app's signature box and arrive as an empty box or a red X. Microsoft's notice describes the new picker, not a change in how the image travels, so test it:
- Send an email from the Outlook app to an address on a different service, such as a personal Gmail account if your work mail is Microsoft 365.
- Open it on a computer and on a phone.
- Check the logo shows, is the size you expect, and is not listed as an attachment.
If the image breaks, keep the Outlook app's signature to text and links: name, title, company and phone, one per line. Everyone you email still gets your full details, and the formatted signature with its logo stays in desktop Outlook and Outlook on the web.
Where Signatoro fits
The Outlook app keeps its own signature, separate from desktop Outlook, so you set it up on each phone. Signatoro gives you the same details to put there: make your signature once, then use "HTML" > "Copy as text" for the text lines the Outlook app takes reliably. "Send me a test" emails you the signature with the install steps for your mail app, so you can copy it on the phone itself.
On the Company plan, the logo, layout and color stay the same for everyone, and each person keeps their own name, title and phone. When the brand changes, everyone gets their updated signature by email, ready to paste into each app, the Outlook app included.
Questions people ask
Can I add an image to my Outlook signature on my phone?
Yes. In the Outlook app on iPhone or Android, open Settings, tap "Signature" under "Mail", then "Insert image". Since Microsoft's fall 2026 rollout, you can pick the image from OneDrive or from the photo library. Send yourself a test to check it reaches the reader.
Does this change my desktop Outlook signature?
No. The Outlook app's signature is separate from the one in desktop Outlook and Outlook on the web. Microsoft's notice covers Outlook for iOS and Android only.
Do I need my IT administrator to turn it on?
No. Microsoft says the feature is on by default and needs no administrator setup. Which OneDrive accounts you can pick from follows your organization's existing sharing rules.
Will my old Outlook app signature change?
No. Microsoft's notice says existing signatures are not modified. The OneDrive option appears only when you insert a new image.
Why does my logo arrive as a red X or an empty box?
The recipient's mail app could not show the image. Send a test to another service and open it on more than one device. If it still breaks, keep the Outlook app signature to text and use the image signature in desktop Outlook.
Sources
Read on November 4, 2026:
- MC1437668 - Microsoft Outlook for iOS and Android: Insert signature images from OneDrive (Microsoft 365 message center, via merill.net)
- MC1437668 change history (cloudscout.one)
- Outlook: Insert Signature Image from OneDrive (Microsoft 365 roadmap 568079)
- Can I change my email signature? (Microsoft Support)