That's been a lingering question. He offered no explanation as to why he could not retrieve four years' worth of emails. Despite his status—he was the vice-president of the CBSA at the time, as well as the chief information officer for the CBSA—he was unable to explain that discrepancy, so the CBSA president was unable to really shed any light as to the content—
On February 13th, 2024. See this statement in context.