The only e-mails that remain are the residual e-mails that remain after the application of records management guidelines. Employees have a responsibility to go through their records, make sure they keep those of archival value, if they're public servants, and have them to be able to be accessible pursuant to the Library and Archives of Canada Act. What remains is residual and not required to be kept. We delete those e-mails because servers have a finite capacity. To keep unnecessary residual e-mails that are not required by the government would actually do damage to our servers.
I won't talk more about that because my colleagues at Shared Services Canada could probably speak more knowledgeably about that than I can.