Few traders and brokers realize that the Letter of Intent is not a standard document in International Trade. When "LOI" is used, it actually refers to the Letter of Indemnity. This is standard usage of the term and has been for decades. The Letter of Intent (hereafter referred to as LOI) is often used in specific domestic trades, such as in real estate or corporate mergers, but it has no standard usage in International Trade itself.
Letter of intent is used when an individual enters into a certain transaction or business relationship. People usually go for letters of intent instead of going for a legally binding agreement.