One or more computing devices, systems, and/or methods for facilitating user subscription to content from a content provider are provided. For example, a message interface provides access to messages associated with a user message address of a user. A content recommendation to subscribe to content of a content provider is generated and populated within the message interface (e.g., a recommendation to subscribe to a gardening newsletter). Responsive to the user interacting with the content recommendation, a subscribe option is displayed through the message interface. The user can use the subscribe option to quickly and efficiently create a user subscription to the content without transitioning away from the message interface. Information used to create the user subscription can be prefilled in order to reduce the amount of user actions needed for creating the user subscription.