A. KATHLEEN TOMLINSON, Magistrate Judge.
During the November 12, 2015 motion hearing, the Court gave Plaintiffs a final opportunity to provide further support for their claim that Plaintiff Astilean did not waive the attorney-client privilege protecting a December 1, 2012 email (Bates No.001-00020743) sent to his former counsel, Attorney Danzig, by inadvertently disclosing that email to a third party, Bruce Bickford. See DE 132 ¶ 4. Plaintiffs thereafter submitted the unsworn (i.e., jurat not completed) affidavit of Plaintiff Astilean, see Affidavit of Aurel A. Astilean ("Astilean Affid.") [DE 134-1], and Defendant filed its opposition [DE 139].
As the Court noted during the conference, the burden is on Plaintiffs, as the parties asserting the attorney-client privilege, to demonstrate that the privilege has not been waived. See DE 132 ¶ 4; Denney v. Jenkens & Gilchrist, 362 F.Supp.2d 407, 412 (S.D.N.Y. 2004). Having reviewed the parties' submissions, the Court concludes that Plaintiffs have not met their burden under the circumstances presented here. "[O]ne of the most important factors in the waiver inquiry is the effort `taken to rectify the error,' including the speed of such efforts." United States v. Finazzo, No. 10-CR-457, 2013 WL 619572, at *14 (E.D.N.Y. Feb. 19, 2013). In his affidavit, Plaintiff Astilean states that he "called [Bickford] and told him to disregard the email" because it was "meant for [Astilean's] attorney." Astilean Affid. ¶ 5. However, Astilean has not indicated how much time elapsed between when he inadvertently sent the email to Bickford and this follow-up conversation.
Accordingly, the Court finds that the attorney-client privilege has been waived as to the December 1, 2012 email and the document must therefore be disclosed. The Court is directing Plaintiffs to produce the December 1, 2012 email to Defendant by December 21, 2015.