How to Fix PDF Not Attaching When Using an Email Submit Button
Question details
The user needs to configure a PDF form button to automatically attach the PDF file to a new email message, and troubleshoot cases where the resulting email contains no attachment.

- Product
- PDF Editors
- Device & OS
- not provided
- Scenario
- Clicking an embedded submit button within a PDF form to send the filled document via email.
- Observed behavior
- The email client opens a new draft message, but the PDF form is missing from the email attachments.
Ensure you have a default desktop email client (such as Outlook or Apple Mail) installed and configured on your computer, as browser-based email services often cannot process automatic PDF attachments from form buttons.
Configure the Button's Submit Form Action Correctly
Use this solution to verify that the button is set to submit the entire PDF document rather than just form data.
A common reason for missing attachments is that the button action is incorrectly set to execute a menu item or submit data in a format other than the complete PDF.
To ensure the actual file is attached, the action must be specifically defined to submit the entire PDF file.
Open your PDF document in your PDF editor, navigate to the Form tools, and enter form editing mode to interact with the button properties.
Right-click the target email button and select 'Properties' from the context menu.
Navigate to the 'Actions' tab. Select 'Submit a form' from the 'Select Action' dropdown and click 'Add'.
In the 'Enter a URL for this link' field, type 'mailto:' followed by the destination email address (e.g., mailto:example@domain.com).
In the 'Export Format' section, ensure that 'PDF The complete document' is selected, then click 'OK' to save your settings.

Verify Default Email App Settings in Your OS
If the button is configured correctly but nothing happens or the attachment is still missing, your computer may lack a proper default email client association.
Create and Share Interactive PDF Forms with WPS Office
WPS Office offers a powerful, user-friendly PDF editor that allows you to easily design interactive forms, configure submit buttons, and share documents directly via email. It handles attachments smoothly and ensures your files look perfect on any device.
- 1. Open your document in WPS PDF: Launch WPS Office, select the PDF module, and open your form document.
- 2. Navigate to the Form tab: Click on the 'Form' tab in the top ribbon to access the interactive form creation tools.
- 3. Add a Push Button: Select the 'Push Button' tool, draw it on your page, and double-click to open its properties.
- 4. Set the Submit Action: Under 'Actions', set the trigger to 'Submit a form', enter your 'mailto:' address, and choose to submit the complete PDF document.

Frequently Asked Questions
Why does my PDF email button open a blank web browser tab instead of my email app?
This usually happens when you rely on a web-based email service (like Gmail in Chrome) instead of a desktop email client. PDF mailto buttons typically require a locally installed email application to attach files automatically.
Can I specify an email subject line directly in the PDF button properties?
Yes. When configuring the 'mailto:' link in the button's action properties, you can append a subject line. Format it like this: mailto:name@example.com?subject=My Form Submission.
Does the person filling out the form need a specific PDF viewer to use the submit button?
Most standard desktop PDF readers, including WPS PDF and Adobe Reader, fully support form submission buttons. However, built-in browser PDF viewers (like Chrome or Edge's default viewer) often block these actions for security reasons, so users should be advised to download and open the form in a dedicated PDF application.




