Great news, starting today, you can now send and receive money through the Gmail Android App.
Similar to Gmail on the desktop, users of the Android Mobile app in the US can send to and receive money from both Gmail users and non-Gmail users. Just click the paperclip attachment icon and you will have an option to Send Money or Request Money.
The best part of this feature is that users are not charged to send or receive money. This has started rolling out to users today, and you can learn more here.