I would probably take a different approach. SharePoint is meant to be internal, so I would recommend you share the news that your wish to be for external parties on your own webpage.
From there you share the article on the appropriate Social Media Plattforms and book a 5 min slot in your employees calenders for sharing on social media.
Having a communication strategy is important since different social media plattforms have different use cases and standards.
This would remove risks with the wrong information being shared and drive traffic to your webpage.