How to Use Adobe Fill & Sign with Outlook for Mobile on iOS
Question details
Users need to open and sign PDF attachments received via the Outlook mobile app on iOS using Adobe Fill & Sign.

- Product
- Outlook Mobile / Adobe Fill & Sign
- Device & OS
- iOS (iPhone/iPad)
- Scenario
- Receiving a PDF document via email in the Outlook iOS app that requires immediate filling and signing.
- Observed behavior
- Adobe Fill & Sign does not directly integrate into the Outlook app's native attachment viewer, preventing users from opening the file straight into the signing tool.
Ensure that both the Microsoft Outlook app and the Adobe Fill & Sign app are updated to their latest versions from the App Store.
Save the PDF Attachment and Open it in Adobe Fill & Sign manually
Since there is no direct integration, you must save the PDF file from Outlook to your local iOS files first, and then import it into Adobe Fill & Sign.
While direct app-to-app integration is not available between Outlook for iOS and Adobe Fill & Sign, you can easily bridge the gap using the native Apple 'Files' app.
Launch the Outlook app on your iOS device, navigate to the specific email, and tap the PDF attachment to open the preview.
Tap the 'Share' icon (a square with an upward-pointing arrow) in the top-right corner of the screen, scroll down, and select 'Save to Files'. Choose a recognizable folder on your iPhone or iPad.
Exit Outlook and open the Adobe Fill & Sign app from your home screen.
Tap the '+' icon or 'Select a form to fill out', choose 'File Browser', and locate the PDF you just saved. The document will open, allowing you to fill out form fields and add your signature.

Easily Read, Fill, and Sign PDFs on iOS with WPS Office
Skip the hassle of saving files back and forth between multiple apps. WPS Office provides a comprehensive mobile suite that allows you to directly open, fill, sign, and share PDF attachments seamlessly on your iPhone or iPad.
- 1. Open PDF with WPS: Tap the PDF attachment in Outlook, tap the Share icon, and select WPS Office from your app list.
- 2. Access the Fill & Sign tool: Once the document opens in WPS Office, select the 'PDF Edit' or 'Fill & Sign' option from the bottom toolbar.
- 3. Sign the document: Create or insert your saved digital signature and place it anywhere on the document.
- 4. Share directly: Save the changes and use the built-in share feature to email the signed document immediately.

Frequently Asked Questions
Can I directly tap a PDF in Outlook iOS and open it in Adobe Fill & Sign?
No, Outlook for iOS does not offer direct native integration to immediately launch Adobe Fill & Sign. You need to save the file to your device's Files app first, or attempt to route it via the iOS Share sheet.
How do I reply to the original email with the signed PDF?
After signing the document in Adobe Fill & Sign, tap the 'Share' icon. If you select Outlook, it creates a new draft. To reply, it is best to save the signed PDF to your Files app, go back to your original Outlook email, tap 'Reply', and attach the newly signed file from your local storage.
Are there built-in alternatives to sign a PDF on iOS without downloading another app?
Yes. When previewing a PDF attachment in the Outlook iOS app, you can tap the Share icon, select 'Markup' (or save to Files and use Markup there), and use Apple's native signature tool to sign the document before sharing it back.




