With the threadmarks support has enabled notifying users of new content in ways which wasn't possible before, and the recent polish have greatly improved this add-on for large and busy sites.
The background sending queue has enabled this add-on to scale for even the busiest of sites, without getting in the way of normal site operations.
I recommend this add-on for anyone who is looking to improve discoverability of new content, and to enable linking discord communities with a forum hosting content of some description.