Adams v Lindsell
Adams v. Lindsell, 106 ER 250 (1818).
Facts: Defendant sent, by mail, an offer to sell wool. Due to Defendant's negligence, the offer was received late. Plaintiff immediately accepted, but Defendant had already sold wool.
Issue: Was Plaintiff's purported acceptance actually an acceptance?
Holding: Yes, Plaintiff had accepted.
Reasons: There was a "meeting of the minds" as soon as Plaintiff posted his acceptance in the mail.
Rule: The mailbox rule states that acceptance takes effect as soon as a letter stating such is posted.