Google is reportedly working on a new feature in its Gmail which will allow users to pay bills through their email inbox.

Re/Code cited a document, which detailed the new service, nicknamed ‘Pony Express’.

The search giant is also reportedly going to be publicise the service as the "the future of paper mail".

Unlike most services, which only takes important information, Pony Express will require further vital user details including full social security number and identify verification.

The details are expected to be handled by a third party and not Google. After registration is over, users will be able to pay their bills using Gmail and other email apps.

According to the website, users will also be able to link their credit, debit card and Google Wallet to Pony Express for seamless transaction.

With the new service users are also likely to get an option to link their account with friends or spouses to split bills and payments, while the process could also be automated.

Previously, a company named Manilla, backed by Hearst, offered a similar service but the company was shut down in 2014.