Google's handy Send Money service, which lets users transfer cash via email, is now available to Gmail users in the U.K. The feature combines with Google Wallet and uses the payment methods you have already registered, but you need to be 18 or older to use it.

Send Money initially made its debut in the U.S. way back in 2013, and Gmail users in other markets were beginning to wonder whether it would ever go global at all. But out of the blue this morning, Google announced its arrival in the U.K.

Send Money is designed to be a quick and easy way to transfer cash for things like your share of dinner or reimbursement for a hotel. To use it, you simply need to click the attachment paperclip inside a new email, then select the pound symbol. You can then enter how much you'd like to send and choose a payment method before confirming with the "Attach" button.

"When you receive money for the first time, you'll need to claim it by setting up a Google Wallet Balance and linking your debit card or bank account," Google explains. "After that, your money can be kept in your Wallet Balance for later sending, for spending on Google Play, or you can quickly transfer it to your bank account."

If you don't see the Send Money feature yet, don't worry; Google says it's being rolled out gradually over the coming weeks to users over 18 years of age, so it will be appearing in your inbox soon.