Do you mean the account which used in this step below:
In this step, you just need to use an Exchange on-premises admin account. The Exchange administrator account does not necessarily need an email address, you just need to add this AD account into those groups:
Then, you will could use this AD account to run HCW successfully:
The running of HCW will not enable mailbox for this AD account:
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
Search the audit logs:
You can also filter by date: