Methods, systems, and apparatus, including computer programs encoded on computer storage media, for transferring money using email. One of the methods includes receiving a user input of a funds-transfer request from a sender associated with a first identifier to one or more recipients associated with one or more second identifiers, respectively, generating one or more electronic messages based on the user input, each being operable to allow a respective recipient to send a funds-transfer authorization, sending the electronic messages to the recipients based on the second identifiers, receiving one or more funds-transfer authorizations from the one or more recipients, respectively, identifying a sender account based on the first identifier and one or more recipient accounts based on the one or more second identifiers, respectively; and initiating one or more transfers of funds from the one or more recipient accounts to the sender account, respectively.