A tenancy has the legal effect of transferring an interest in land from the landlord to the tenant. It means that for a certain term at a determined rent, the tenant has exclusive possession of the premises. Typically, the duties of the landlord and tenant are found within the terms of the tenancy agreements. A breach of any of these terms potentially leads to the termination of the tenancy, resulting in several types of A tenancy has the legal effect of transferring an interest in land from the landlord to the tenant. It means that for a certain term at a determined rent, the tenant has exclusive possession of the premises.

这个exclusive possession of the premises应该包括使用信箱的权利吧！我觉得我们国人都太老实了，白人绝对不会允许房东整天看自己的信箱的。