Does licensing emails to AI waive privilege?

The short answer
The risk is real. The privilege belongs to the company, and voluntary disclosure to a third party generally waives it. In United States v. Heppner, Judge Rakoff held that chats with a consumer AI tool were not privileged, partly because the provider's policy allowed training. Spirit Airlines excluded privileged materials.
Email archives hold legal advice, and licensing puts that advice in someone else's hands. The question is whether it stays protected.
Who controls the privilege?
The company does. In CFTC v. Weintraub (1985) the Supreme Court said the power to waive a corporation's attorney-client privilege rests with its management. In bankruptcy, the trustee holds it.
On that rule, waiver sits with your company's management. Ask counsel whether licensing the archive would count as one.
Does disclosure to a buyer waive privilege?
The general rule is that voluntary disclosure of privileged communications to a third party waives the privilege. The common-interest exception protects sharing among parties with a shared legal interest. Some courts, New York's among them, look for a litigation context.
A buyer's commercial interest may not qualify. I did not find authority on a data buyer specifically.
What did the Heppner ruling say?
Judge Rakoff held, as Manatt summarizes, that chats between a defendant and a consumer Claude account were not privileged.
His reasoning leaned on the provider's privacy policy. That policy allowed training on user data and disclosure to third parties. So the user had no reasonable expectation of confidentiality.
He suggested enterprise tools that do not train on inputs might be treated differently.
That case involved a person using a chatbot, not a licensing deal. My reading is that a buyer who trains on purchased email sits on the same side of the line as that provider.
What did Spirit do?
Its sale agreement excludes "Privileged Materials." Suppose some slip through by mistake. The agreement says the transfer does not cost the seller the protection. The buyer must return or destroy them when notified (Doc 1463).
Talk to a lawyer who handles privilege in your state before you sign. Our rights check asks whether privileged material is in the records and flags it for counsel. HR records are the next category to review.
Vaultfish helps you run the process. We are not lawyers and this is not legal advice. If you need counsel who knows this area, we can point you to one. Ask for a referral

Matt tracks public deals on company records. Before this, nearly a decade at monday.com.

