Meta says it’s building notifications into WhatsApp and Messenger to inform users about these third-party integrations and alert them when a newly compatible third-party messaging app comes online.

WhatsApp or Messenger will then download the media from the media via a Meta proxy service. To enable interoperability, makers of third-party messaging apps will need to sign an agreement with Meta.

Meta is sharing how interoperability with third-party chat apps would work on WhatsApp and Messenger in Europe.