After Google I/O, the Mountain View-based company has quietly announced Google Wallet integration within Gmail, allowing for a new way to send money to friends, family and co-workers.

To send money, a Gmail address isn't required for the recipient, and it's free if your bank account is hooked-up to Google Wallet. If not, you'll have to pay a flat fee of 2.9 per cent for each transaction (minimum $0.30) to send money using your linked credit or debit card.

Google has added an attachment icon within the Gmail compose window. "To send money, hover over the attachment paperclip, click the $ icon to attach money to your message, enter the amount you wish to send, and press send," Google explains. 

The Google Wallet integration within Gmail is currently available only on desktop, though Google says you can also use the Google Wallet website or app to send money on other platforms. Google further boasts that "Google Wallet Purchase Protection" gives you coverage against all "eligible" unauthorised payments. Just in-case you had any worry, it sounds just as safe as PayPal. 

Google says the functionality will be rolling out to all US Gmail users over 18 years old in the coming months. No word on UK availability.