How to Allow Signature Recipients to Attach Files in Adobe Acrobat
Question details
The user wants to know how to enable recipients to attach additional files when signing and returning a document.

- Product
- Adobe Acrobat Sign
- Device & OS
- not provided
- Scenario
- Sending a document for electronic signature while requiring the recipient to provide supplemental documents during the signing process.
- Observed behavior
- The user needs to configure an agreement with a file-upload or attachment field before sending it out for signature.
Ensure you have an active Adobe Acrobat Sign subscription that supports advanced form fields and recipient uploads, as this feature depends on your specific plan tier and administrator settings.
Configure the Agreement with a File Attachment Field
Add a dedicated file upload field to your document in Adobe Acrobat Sign before sending it, allowing recipients to seamlessly upload supporting files.
The ability to let a recipient upload a file is handled entirely through the drag-and-drop authoring environment in Adobe Acrobat Sign. By placing a specific field onto the document, the recipient will be prompted to attach their file before they can finalize their signature.
Log into Adobe Acrobat Sign, click on 'Send' or 'Request e-signatures', and upload the document you want to send.
Input the email address of the recipient who needs to sign and attach a file, then click 'Next' or check the box to 'Preview & Add Signature Fields'.
In the drag-and-drop authoring environment, look at the right-hand panel. Expand the 'More Fields' or 'Data Fields' section.
Click, drag, and drop the 'File Attachment' field onto the appropriate area of your document where you want the recipient to upload their file.
Double-click the placed field to open its properties. Here, you can name the field and check the 'Required' box if the recipient must attach a file to complete the signing process. Click 'Send' when finished.

Edit and Sign PDFs Easily with WPS Office
While enterprise recipient upload workflows are specific to advanced e-signature platforms, WPS Office provides a lightweight, highly compatible, and free alternative for all your everyday PDF editing, form filling, and personal document signing needs.
- 1. Open your PDF: Launch WPS Office and open the PDF document you need to sign.
- 2. Create your signature: Navigate to the 'Fill & Sign' or 'Protect' tab on the top ribbon and select 'Sign'.
- 3. Apply and save: Click on the document to place your signature, adjust its size, and save your newly signed PDF file.

Frequently Asked Questions
What types of files can a recipient attach in Adobe Acrobat Sign?
Depending on the administrator's settings, recipients can typically upload standard file formats such as PDFs, Word documents (DOCX), Excel spreadsheets (XLSX), and common image files (JPG, PNG).
Can I make the file attachment field mandatory for the recipient?
Yes. When configuring the File Attachment field in the Adobe Acrobat Sign authoring environment, you can edit the field properties by double-clicking it and checking the 'Required' box.
Why can't I see the File Attachment field in Acrobat Sign?
The File Attachment feature is not available on all Acrobat Sign plans (such as basic individual plans). It generally requires an enterprise or advanced business plan, and the account administrator must enable the feature in the global account settings.
How do I view the files attached by the recipient once the document is signed?
Once the agreement is completed, the attached files are typically appended to the end of the final signed PDF document automatically. They can also be downloaded separately from the agreement's management page in your Acrobat Sign dashboard.




