Mr. Speaker, we know the Liberal Party itself seemed to have trouble finding emails with respect to the Senate.
However, having said that, on page 21 of the exact same report it says:
Rob Staley, legal representative for the PMO, advised my office that he had clear orders from the Prime Minister to provide complete cooperation with the investigation, and to provide any assistance or documentation the RCMP requested. The PMO employees (current and former) whose e-mails I deemed relevant, have all provided privacy waivers though their legal counsel, relating to the content of their e-mails. The PMO has also waived solicitor-client privilege for those e-mails.