Once you have features like Webmentions and a Micropub endpoint setup for your website then it's a good point to look at other ways you can develop your online presence to be less dependent on social media platforms and services.
Microsub
Enhance and improve the way your website's content can be recognised by search engines as well as aggregated data feeds and other digital platforms by using.
Private messaging
Use your website to send private messages between each other with experimental features like private Webmentions.