How to update signer email Dropbox Sign

Updated Sep 29, 2025

Usage

Endpoint: /signature_request/update

Parameters:

signature_request_id: The ID of the Signature Request to update.
signature_id: The signature ID for the recipient.
email_address: The new email address for the recipient.
name: The new name for the recipient.

Note: This action cannot be performed on a signature request with an appended signature page.

Example Request:

POST https://[api key]:@api.hellosign.com/v3/signature_request/update/[:signature_request_id]

curl 'https://api.hellosign.com/v3/signature_request/update/2f9781e1a8e2045224d808c153c2e1d3df6f8f2f' \
        - u 'SIGN_IN_AND_CREATE_API_KEY_FIRST:' \
        - x POST \
        - F 'signature_id=35e3787bd2e61e496099' \
        - F 'email_address=new_email@example.com' \

What you can expect once this action is complete is the signer’s email will be changed and a new event will be added to the Audit Trail to reflect the change: “[old_email] was changed to [new_email] after requester reassignment.”

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