An eviction letter is an official document sent by a landlord to their tenant and informs the tenant that they need to vacate the rental property. The letter will detail the duration of the notice period, which is typically 30 days, the reasons for the eviction, and the consequences should the tenant fail to move out. It may also inform the tenant of their rights under local laws and how they can dispute an eviction. Eviction letters serve as an important part of the eviction process and provide written proof in case of any disputes or legal proceedings.