> For the complete documentation index, see [llms.txt](https://docs.ochats.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ochats.io/faq/why-i-cannot-receive-incoming-message-from-user.md).

# Why I cannot receive incoming message from user?

Contacts must click your opt-in link before messaging can begin.

It is because the user doesn't click on the opt-in link. Once user clicks on the opt-in link, user will start receiving and sending message with the business.

<figure><img src="https://4079043538-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FnOcbMn8jRSRsyx5dQeIE%2Fuploads%2Fr4nCqm7NSNqWONuEoIZa%2Fopt%20in%20message.jpg?alt=media&amp;token=f8388cf8-b987-42ef-9cae-c7069c1e74fd" alt=""><figcaption></figcaption></figure>