A grant application letter is a formal document sent to organizations that provide funds and other resources to support specific projects. It is used to apply for grants, fellowships, and scholarships, as well as job opportunities or research funding. The letter should present the proposal in an engaging way that demonstrates both the need for the grant and the potential impact it could have on the intended cause. This requires outlining the purpose of the project, describing its expected outcomes, and demonstrating how the requested funds would help to achieve those outcomes. Effective grant applications must also explain why the funding source is the best choice for offering support.