Paying back your friends is now as simple as sending an email, whether you’re chipping in for lunch or reimbursing your roommate for your share of the rent.

Google Wallet is now integrated with Gmail, so you can quickly and securely send money to friends and family directly within Gmail — even if they don’t have a Gmail address. It’s free to send money if your bank account is linked to Google Wallet or using your Google Wallet balance, and low fees apply to send money using your linked credit or debit card.

To send money in Gmail, hover over the attachment paperclip, click the $ icon to attach money to your message, enter the amount you wish to send, and press send.

While sending money in Gmail is currently only available on desktop, you can send money from Google Wallet at wallet.google.com from your phone or laptop. You will need to have set up Google Wallet to send and receive money, and Google Wallet Purchase Protection covers you 100% against eligible unauthorized payments.

This feature will be rolled out over the coming months to all U.S. Gmail users over 18 years old, so keep an eye out for the $ icon in the attachment options. You can also get earlier access if your friends have the feature and send money to you.