Hi,
Thank you for reaching out here in the DocuSign Community.
If the email address was in fact deactivated, then the message would have bounced. This is tracked in the DocuSign eSignature dashboard through the "Failure" delivery status.
If the status did not reflect any delivery failure, then either the email address is still active or the message is being forwarded to a valid/active address.
You can find more details on this topic, here:
Why am I getting the 'Failure' status after sending an envelope?
Feel free to let us know if you need further assistance with this.
Thank you for using DocuSign, we hope you have a wonderful rest of your day!
Best regards,
Alejandro R. | DocuSign Community Moderator
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