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Templates

Prefilled fields

Prefilled fields let you provide information in a field before a signing request is sent. Instead of asking the signer to enter information that you already know, you can fill it in yourself when creating the signing request.

The same template can then be reused with different information for different signing requests.

Why use prefilled fields?

Prefilled fields are useful when the document stays the same but some of the information changes each time you send it.

For example, suppose you use the same Event Waiver for events in different locations.

Your template can contain:

When creating a signing request for a Boston event, you can prefill:

When sending the same template for a New York event, you can use:

You only need one template. The values can be different for each signing request.

Other common uses

Prefilled fields are useful for information that is known before the document is sent, such as:

For example, a standard quotation template can have a Price field. When creating a signing request, you can enter the agreed price before sending the quote to the customer.

How prefilled fields work

1. Add a prefilled field on the template. Place the field on the document as usual, then assign it to Prefill (Sender) and give it a clear name, such as Branch Name. This marks the field as sender-supplied instead of signer-completed.

Template field assigned to Prefill Sender with Branch Name field configuration in Undersign
Screenshot showing a template field assigned to Prefill (Sender) and named Branch Name.

2. Fill the prefilled field when sending. When creating a signing request from the template, the Pre-filled Document Fields dialog asks you for a value for each prefilled field. Enter the value for this request, for example, New York, before sending.

Pre-filled Document Fields dialog entering a value for Branch Name when sending in Undersign
Screenshot showing the Branch Name value being entered in the Pre-filled Document Fields dialog.

3. Preview what the recipient will see. The Review & Send step shows the Prefill Values, for example, Branch Name: New York, so you can confirm the data is correct before the request goes out. This is exactly what will appear on the document when the recipient opens it for signing.

Review and Send step previewing prefill values Branch Name New York in Undersign
Screenshot showing the prefill values preview in the Review & Send step.

4. The signer finds the field already populated. When the recipient opens the signing request, the prefilled value, New York, is already in place on the document. The signer only completes their own fields, such as signature, initials, and date.

Signer view with prefilled New York value already populated on the document in Undersign
Screenshot showing the prefilled value already populated when the signer opens the request.

Prefilled fields vs. signer fields

The difference is simply who provides the information:

FieldWho provides the value?
Prefilled fieldThe sender provides the value before sending the request.
Signer fieldThe signer provides the value while completing the signing request.

For example, if you already know the quote amount, you can prefill the Price field. If the signer needs to enter their phone number, that should be a signer field.

Reuse one template for different requests

The main benefit of prefilled fields is that you don't need to create separate templates just because some information changes.

As shown above, the same template can carry Boston values for one request and New York values for the next.

One template + different prefilled values = different signing requests

This keeps your template library smaller and makes recurring signing workflows much easier to manage.