I'm looking to perform a load test on a triggered send by pushing ~160k records through the trigger. For the test, we are planning on taking a block of live records and replacing the email address with an internal one so that the triggered email is not sent to a live subscriber.
I can't find any best practices around such a test and would like to confirm that how the test is outlined above will not result in a live subscriber receiving the test send if the subscriber is already part of 'All Subscribers' or the 'Triggered Send Managed List.'