A: Although it is not an actual policy, the EOI is any temporary documentation that the customer and insurance company have agreed to the terms of providing coverage. The EOI is provided to the customer by the insurer, usually at the point of sale. The EOI is temporary and typically has an expiration date of 30-60 days, which provides plenty of time for the actual policy to be issued. It provides proof of insurance that the customer can provide to a potential lender, title company, or any other entity requesting proof of insurance, especially for the sale of a home.