Salesforce GovCloud – DocuSign Apex Toolkit Not Available + Cannot Pass Email to DocuSign Commercial

We are working on a DocuSign integration from Salesforce GovCloud (FedRAMP High) and running into two major issues:

1. The DocuSign Apex Toolkit is not available for installation in Salesforce GovCloud.

   • The standard managed package cannot be installed.

   • We cannot find a GovCloud‑approved version.

   • Does DocuSign provide a FedRAMP‑approved Apex Toolkit package or alternative?

2. Salesforce GovCloud cannot pass Name/Email PII to DocuSign Commercial.

   • Template roles do not accept email.

   • Flow actions cannot send email.

   • Recipient fields remain blank.

   • We understand GovCloud blocks PII from leaving the UI, but what is the recommended workaround?

We attempted to use the REST API with JWT, but our Integration Key does not show:

• Backend Integration (JWT)

• Service Integration

• User Consent / Add User

We need guidance on:

• How to enable Backend Integration (JWT) for our Integration Key

• Whether DocuSign provides a GovCloud‑approved Salesforce package

• Best practices for passing recipient email via API from GovCloud to Commercial 

• I am looping thru the custom object and sending the envelop with action send but email is not an option is there a way to force it or by pass with min coding

Environment Details:

• Salesforce: GovCloud (FedRAMP High)

• DocuSign: Commercial (Demo + Production)

• Integration Type: Private custom integration (JWT option not visible)

Any guidance from DocuSign engineers or others who have solved this in GovCloud would be greatly appreciated.