Nearly every commercial agreement specifies how formal notices must be given: in writing, to a named person at a stated address, by a permitted method, with copies to counsel. These clauses are treated as mechanical boilerplate and they decide real disputes.

Why they matter. Termination rights, cure periods, claim deadlines and renewal elections are usually conditioned on notice given in the manner specified. A termination communicated by email where the clause requires certified mail may simply be ineffective — which can leave the terminating party in breach rather than the party they were terminating.

Common failures: sending to the operational contact rather than the address in the contract; missing the copy-to-counsel requirement, which some clauses make a condition; using a method not permitted; and relying on actual receipt where the clause specifies deemed delivery.

When receipt is deemed to occur also matters, because it starts the cure period. Clauses commonly deem delivery on personal service, on a stated number of days after mailing, or on confirmed transmission.

Practical guidance. Before sending anything consequential, read the notice clause and follow it literally, including belt-and-braces delivery by more than one permitted method. And keep the addresses current — an agreement naming an office the company left years ago is a problem for both sides.