Transferring money using email

A computer-implemented method of transferring money from an account of a user to an account of a recipient using an email message, comprising:

• receiving, by a payment service system, the email message, wherein the email message originated at a sender device associated with the user, wherein the email message is addressed to a recipient email address, wherein the email message includes, within a subject or a body of the email message, a payment amount to be transferred to a recipient account associated with the recipient email address;
• identifying, from the received email message by the payment service system, a sender email address associated with the user and the recipient email address;
• identifying, by the payment service system, a sender financial account of the payment service system associated with the sender email address of the email message;
• identifying, by the payment service system, a recipient financial account of the payment service system associated with the recipient email address of the email message;
• analyzing, by the payment service system, the subject or the body of the email message to determine the payment amount;
• and
• initiating, by the payment service system, a transfer of the determined payment amount from the sender financial account to the recipient financial account.

A payment service system comprising:

• one or more computers and one or more storage devices storing instructions that are operable, when executed by the one or more computers, to cause the one or more computers to perform operations comprising:
• receiving, by a payment service system, an email message, wherein the email message originated at a sender device associated with a user, wherein the email message is addressed to a recipient email address, wherein the email message includes, within a subject or a body of the email message, a payment amount to be transferred to a recipient account associated with the recipient email address;
• identifying, from the received email message by the payment service system, a sender email address associated with the user and the recipient email address;
• identifying, by the payment service system, a sender financial account of the payment service system associated with the sender email address of the email message;
• identifying, by the payment service system, a recipient financial account of the payment service system associated with the recipient email address of the email message;
• analyzing, by the payment service system, the subject or the body of the email message to determine the payment amount;
• and
• initiating, by the payment service system, a transfer of the determined payment amount from the sender financial account to the recipient financial account.

A computer-implemented method of transferring money from an account of a user to an account of a recipient using an email message, comprising:

• receiving, at a user device, user input of a payment amount to be transferred to a recipient account in a requested transaction;
• generating, by the user device, an email message having the payment amount within a subject or a body of the email message;
• and
• sending, by the user device, the email message to an email server, wherein the email message includes a payment service email address that causes the email server to forward the email message to a payment service system,
• wherein, upon receiving the email message by the payment service system, the payment service system
• identifies a sender financial account of the payment service system associated with a sender email address of the email message,
• identifies a recipient financial account of the payment service system associated with a recipient email address of the email message, and
• initiates a transfer of the payment amount from the sender financial account to the recipient financial account.