Facebook Custom Audiences
A great way to re-engage users with your app (i.e. get back lost users) is to reach those users via Facebook ads using Facebook Custom Audiences.
Once you have integrated your Facebook ads account in your CleverTap Dashboard, you can generate targeted user segments in your CleverTap Dashboard and use those segments to build custom audiences for your Facebook ads.
See our Facebook Audiences Dashboard guide to get started.
Other than integrating your Facebook ads account in your CleverTap Dashboard, there is no special integration required to support Facebook Custom Audiences.