US Patent 11411900 Off-platform messaging system

A method, to manage an event invitation in a computer network environment, comprises presenting, using one or more processors, an event invitation creation indicium to a first user on a user interface of a computing device. Responsive to user selection of the event invitation creation indicium, an event creation interface is presented to receive event details. Responsive to receipt of the event details, an event invitation message is generated for communication, via a messaging system, by the first user to a second user of the messaging system, the event invitation message including a join indicium that is user-selectable to join a group chat related to the event. Responsive to a message send input from the first user, the event invitation message is sent, via the messaging system, from the first user to the second user. A request is received, from the second user, a request to join the group chat related to the event. A group chat message thread, associated with an event group including at least the first user and the second user, is then stored within the messaging system.