E-insurance is mandatory for certain insurance policies according to IRDAI. It allows policies to be stored digitally in an electronic insurance account. Policies for life, health, motor, and travel insurance exceeding certain premium amounts must be in electronic form. Advantages of e-insurance include easy storage of all policies in one place, reduced risk of losing paper policies, and ability to store policies from different insurers together. Individuals can open an e-insurance account by working with an approved repository like CDSL or CAMS and submitting KYC documents.