YouTube is testing a built-in direct messaging feature for users aged 18 and older in Ireland and Poland. Users can initiate chats by tapping the notification bell on videos and inviting others to share content. Invite links expire after seven days, and users can also use the Share button to send messages. This is YouTube's second attempt at direct messaging, having previously tested it from 2017 to 2019 before discontinuing it. The new feature aims to facilitate communication without leaving the platform, allowing creators and brands to build communities and share content. User feedback will determine the future of this feature, and there is currently no commitment to a global rollout.