Bulk update of employee email addresses or activities

Summary
Bulk update of employee email addresses or activities

Content (please ensure you mask any confidential information):

We recently refreshed our Staging environment from our Production environment, and now our Staging environment still has all employees' real email addresses and many have active new hire packets that are outstanding. Is there a way to either bulk update all employees' email addresses to something fake, or delete all outstanding packets so no one is emailed about old packets?

Version (include the version you are using, if applicable):

TBE

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