Abstract: A system and method for suggesting relevant groups and recipients when replying to messages in a messaging application. In response to a first received message, the system identifies groups with membership comprising the sender and receiver. Interface elements representing these mutual groups are displayed as selectable suggestions. The receiving user can choose groups to include in the reply, along with other users. Suggested groups are determined based on recent interactions, mutual connections, and message content. Users can also create new groups from suggestions for ongoing messaging. By recommending shared groups and relevant recipients, the system enables efficient context-based selection when replying. The suggestions aim to streamline recipient picking through intuitive interfaces and machine learning algorithms. This improves the user experience for seamless messaging discussions with appropriate recipients.