Legal Dictionary of Pakistan

Mailbox

ule. 1. Contracts. The principle that an acceptance becomes effective - and binds the offeror - once it has been properly mailed. ( The mailbox rule does not apply, however, if the offer provides that an acceptance is not effective until received. 2. The principle that when a pleading or other document is filed or served by mail, filing or service is deemed to have occurred on the date of mailing. ( The mailbox rule varies from jurisdiction to jurisdiction. For example, it sometimes applies only to certain types of filings, and it may apply when a party uses an overnight courier instead of U.S. mail.