I based my comments on the statement
the pop-up appears to be related to an external package and is marked protective markings for outlook - copyright preemptive consulting v2.1.2.2
which pointed to the involvement of https://www.preemptive.com.au I guess Boldon James (who seem to be in the same line of business) were using Preemptive's software as a basis for theirs. I wonder if they know?