Exceptions To The Rule In Adams v Lindsell. True even in a postal acceptance rule contract law that acceptance rule was sent by law in theory, are not sent to a contract until the court is delivered. A theory of “efficient performance” thus perfectly mirrors, and perfectly replicates, orthodox contract law’s theory of efficient breach. It states that where acceptance is by post, it is completed and effective the moment the letter is posted. The PECL and the CISG have adopted the receipt theory as a general rule to deem the contract concluded, following the most modern approach in comparative law. The acceptance is actually effective as soon as the offeree mails the acceptance, according to Cornell University Law School. As an exception, both instruments adopt the dispatch principle or even the information theory in certain circumstances. The postal rule remains one of the most controversial and confusing part of modern contract law as it diverts from the general rule of acceptance. Techniques for a posted acceptance rule contract law and commercial context of rescission is people who could keep his offer is usual, acceptance of the clause. BSAD 341: BUSINESS LAW Semester: Fall 2011 Assignment # 2 - Case Study - Contract Law The Postal rule is an exception to the general rule of contract law in regard to the acceptance, which states that “acceptance in not effective until communicated to … Postal Rule-Contract Law . The mailbox rule (also called the posting rule), which is the default rule under contract law for determining the time at which an offer is accepted, states that an offer is considered accepted at the time that the acceptance is communicated (whether by mail e-mail, etc). ” 3 Overview. The rule in Adams v Lindsell  1B & A 681 is also called the postal acceptance rule. Reading Time: 2 minutes With much of business and commercial operations being online in this day and age, it may seem strange to consider the effects of making contracts by post. An Intention to Create Legal Relations, the contracts act 1950 does not contain any provision relating to intention of the parties to a contract to be bound in law. Through history this special exception remains unchanged even after about 200 years after its introduction into the contract law. The postal rule as accepted in the common law legal system: “ Where the circumstances are such that it must have been within the contemplation of the parties that, according to the ordinary usages of mankind, the post might be used as a means of communicating the acceptance of an offer, the acceptance is complete as soon as it is posted. Contract Contract Law Contract law Preview text 3.1 The postal rule Where it is agreed that the parties will use the post as a means of communication the postal rule will apply. However it is important to know the consequences of the Postal Acceptance Rule as it can have significant impacts on whether you must carry out a potential contract that you wish you could cancel. The postal rule is an exception to the general rule that contract acceptance must be communicated directly to the offeror and acceptance is only effective when the offeror receives that acceptance. This has led lawyer-economists to suggest that economic analysis ends at an impasse—neither orthodox contract nor fiduciary revisionism is more efficient than the other.