Serious question -- how does Facebook keep getting hit with these 5+ year-old emails getting published? Did they not have any email retention policy?

Is the root cause that they migrated off of email and did all their sensitive discussions in "internal tools" with no actual data retention enforcement? If so, that seems quite ironic.

Many people keep copies of emails. Perhaps they feel compelled to make the information public, and maybe they felt more compelled once they received their RSUs and cashed them in.

"Most full-time employees receive RSUs (restricted stock units) which are shares that become sellable on a set schedule over four years. " https://www.quora.com/Do-Facebook-employees-get-stock-option...

Most of the recent documents have become public because of a court case.