Red envelopes are traditionally used for gift-giving during holidays like Chinese New Year, but the payment service could be applied to any P2P payments.
Facebook is making it easier to send money to your friends, and bug them for any cash they owe you.
It's a convenient feature that saves you from the hassle of having to exchange bank details with people, save them and then carry out the transfer in a different app. Now, they're set to roll out in the United Kingdom "over the coming weeks", the company has said in a press release.
To do this you'll simply have to click on the small blue + sign and a green payment icon will appear in the menu.
To receive money you'll need to set up a debit card on your account.
All you have to do is link your debit card to your Messenger account, tap "pay", enter the amount of money and press send.
Facebook has a greater opportunity to monetize its service with additional revenue streams aside from advertising, including subscription fees for publications, earning a commission on payments and charging users to list products for sale in the Marketplace section. It won't allow you to send money to businesses or internationally.
Messenger will also push this service when it recognises that you're talking about money owed, eg, if you say "you owe me £5" a reminder that you can transfer money via Messenger will pop up in the chat.
Facebook has launched a person-to-person payments service in the United Kingdom, extending the social network's reach into financial services and stealing a march on Apple.
All credentials are encrypted and protected with "bank level security" and payments would be monitored by anti-fraud specialists.
Mr Marcus added that Facebook would not be using debit card data or any other signals from users' payments to target adverts or to gather information on users.
To use it, go into a chat with a friend and tap the plus button, and it will then let you select the option to pay them. "Finally, Messenger payments are offered as a regulated payment service, meaning they're directly subject to consumer protection requirements".
You can also report suspicious activity when sending or receiving money in Messenger.