A renewal letter is a formal document used to request or confirm the continuation or extension of an agreement, contract, or service. It can be sent by individuals or businesses to renew various types of agreements, such as leases, subscriptions, memberships, or licenses. The letter typically outlines the terms of renewal, including any updated conditions, duration, or costs. It may also express the sender’s intention to continue the relationship or service and may include a request for confirmation or signature from the recipient. A well-written renewal letter helps ensure a smooth transition and reinforces the ongoing partnership or commitment.