Reference: Adobe Sign Email Notification Settings

You can use the

Edit Tenant Setup - Business Processes

task to configure Adobe Sign completion email notifications related to Review Documents
steps in Production and non-Production tenants:

Tenant Type	Default Notification Settings
Production	The signer/recipient receives Adobe Sign email notifications after signing Adobe Sign documents distributed through a Review Documents step. To suppress these notifications, select the Disable Adobe Sign Completion Email Notifications for Production Tenants option on the Edit Tenant Setup - Business Processes task.
Non-Production/Sandbox/Implementation	The recipient doesn’t receive Adobe Sign email notifications after signing Adobe Sign documents that are distributed through a Review Documents step. To enable these notifications, select the Enable Adobe Sign Completion Email Notifications for Non-Production Tenants option on the Edit Tenant Setup - Business Processes task.

To change Adobe Sign email notification settings related to the Distribute Documents or Tasks
business process, contact Adobe directly.

Configuration Impact on Email Notifications

This table provides Adobe Sign email notification configuration scenarios in Production and non-Production tenants:

Disable Adobe Sign Completion Email Notifications for Production Tenants check box selected	Enable Adobe Sign Completion Email Notifications for Non-Production Tenants check box selected	Result in Production Tenant	Result in Non-Production Tenant
No	Yes	Adobe Sign sends an email notification.	Adobe Sign sends an email notification.
Yes	No	Adobe Sign doesn't send an email notification.	Adobe Sign doesn't send an email notification.
Yes	Yes	Adobe Sign doesn't send an email notification.	Adobe Sign sends an email notification.
No	No	Adobe Sign sends an email notification.	Adobe Sign doesn't send an email notification.