How to Create a Required Digital Signature Field Without Recipient Emails
Question details
The user needs to add a mandatory digital signature field to a reusable PDF form when the specific recipients and their email addresses are unknown during creation.

- Product
- PDF Editor
- Device & OS
- not provided
- Scenario
- Creating a reusable PDF form that will be distributed to various unknown users for mandatory signing.
- Observed behavior
- The user wants to establish a mandatory signature requirement without tying the signature field to a pre-defined email address or routing workflow.
Ensure you have a PDF editor with form creation capabilities installed, and that your document content is finalized before adding interactive form fields.
Add a Standard Digital Signature Field in Prepare Form Mode
Use standard form building tools to insert a digital signature field that relies on the signer's local digital ID rather than a predefined email address.
A standard digital signature field embedded in a PDF does not require recipient email addresses to be pre-configured. Any user who opens the document can click the field and apply their own digital certificate to sign.
Open your PDF document in your PDF editor (such as Adobe Acrobat) and navigate to the 'Prepare Form' or 'Form' tab.
Select the 'Digital Signature' field tool from the toolbar and click and drag on the document where you want the signature to appear.
Double-click the newly created signature field to open its Properties dialog. Navigate to the 'General' tab and check the 'Required' box.
Close the properties window and save your PDF. The form can now be distributed, and any recipient can sign it using their compatible digital ID.

Use an e-Signature Service for Guided Workflows
If you need to track documents and record timestamps later, utilizing a dedicated e-signature service is a better alternative to standard form fields.
Easily Create and Fill PDF Forms with WPS Office
WPS Office provides robust PDF editing and form-building tools, allowing you to add text fields, checkboxes, and digital signature fields effortlessly. It is fully compatible with standard PDF forms and offers a seamless experience for creating reusable documents without the need for complex configurations.
- 1. Open PDF in WPS Office: Launch WPS Office and open the PDF document you wish to turn into a reusable form.
- 2. Access the Form tab: Navigate to the 'Form' tab located on the top ribbon to reveal the interactive form controls.
- 3. Add a signature field: Click on the 'Digital Signature' field option and draw the field on the page where the user needs to sign.
- 4. Adjust properties: Right-click the newly placed field, select 'Properties', set the field as required, and save your document.

Frequently Asked Questions
Can users sign the PDF if they don't have a digital ID?
When a user clicks a standard digital signature field, their PDF reader will usually prompt them to create a new self-signed digital ID on their computer if they do not already have one configured.
What is the difference between a standard signature field and an e-signature service?
A standard signature field is embedded directly into the PDF file and relies on the user's local digital certificate. An e-signature service operates in the cloud, tracking the document's progress, verifying email identities, and storing audit trails.
Will making the field 'required' prevent saving the document?
No, it will not prevent standard saving. However, making a field required generally prevents the user from submitting the form electronically via a submit button until the required signature is applied.
Are standard digital signatures added via form fields legally binding?
Standard digital signatures use cryptographic certificates to ensure document integrity, which is legally recognized in many regions. However, specific compliance depends on your local laws, the type of transaction, and the level of identity verification tied to the certificate.




