Tap the share icon on a public Post.
Note: A protected Post cannot be shared.
Tap WhatsApp from the share menu.
If you’re signed into WhatsApp on your device, your X app will close, and WhatsApp will open.
The Post you want to share becomes a screenshot to share through WhatsApp.
You can share the Post with a single person or a group in a message. From there, they can tap the URL of the Post screenshot to go to X and join the conversation.