主权项 |
1. A method comprising:
obtaining, at a computing system, registration information associated with a user who has subscribed to receive electronic messages from a subscription-based messaging service, the registration information including an electronic address of the user and a private token that is known to the user and to the subscription-based messaging service; embedding, using the computing system, the private token in an electronic message associated with the subscription-based messaging service, wherein inclusion of the private token in the electronic message indicates to the user that the electronic message is from a legitimate sender that is associated with the subscription-based messaging service; and sending, using the computing system, the electronic message to the electronic address of the user. |