DAK SEWA is a beta version mobile application developed for Android by the Department of Posts, aimed at enhancing citizen engagement with postal services. This free application offers several key features including mail tracking, post office search, postage and insurance premium calculators, interest calculators, and a complaints management system. Users can easily track various mail types by entering article numbers, making it convenient to monitor deliveries. The post office search allows users to find nearby post offices using names or pin codes, complete with location details and contact information.

In addition to tracking and searching, DAK SEWA provides a postage calculator that estimates tariffs based on weight and distance for different mail categories. The insurance premium calculator assists users in determining premiums for various postal life insurance policies. Furthermore, the interest calculator helps users understand returns on small savings schemes. The complaints management feature enables users to register, track, and receive alerts about their complaints, ensuring a comprehensive user experience.