In India, Post Office gives it's customers the facility to make an transaction from all post office ATMs if you have opend an saving account in the post office. However you can withdraw cash from ATM up to 25,000 only from your post office saving account. The limitation of free transactions for metro cities is 3 and 5 free transaction is allow for non-metro cities.
India Post office offers many savings schemes to its customers like where you get more interest than a bank account: Post Office includes AAP Savings Account, Recurring Deposit Account (RD), Public Provident Fund (PPF), Kisan Vikas Patra, Monthly Income Scheme Account (MIS), Sukanya Samriddhi Yojana, Fixed Deposit Account and Senior Citizen Savings Scheme (SCSS).
There are annual maintenance charges associated with Post Office ATM/Debit card. From October 1, 2021, ATM/Debit card annual maintenance charges will be Rs 125 plus GST (for more information about charges, contact post office branch).