YouTube is introducing a native video sharing and messaging feature, rolling out in the U.S. and internationally for users aged 18 and older. This update includes a messaging icon for sharing videos, texting, and reacting to content without leaving the app, supporting all video formats. The feature follows a successful rollout in select international markets and adheres to YouTube's Community Guidelines. Users must verify their age through their Google account and be signed into a YouTube channel to access the feature.