I’ve been on Wattpad for ages, and honestly, the messaging feature feels pretty clunky for anything beyond quick 'hey, loved your chapter!' notes. The interface isn't built for sustained back-and-forth. Notifications get buried, and there's no real threading. If my friends and I want to dissect theories or share drafts privately, we usually bounce over to Discord servers we've set up.
Wattpad messages work in a pinch, but they lack the organization or permanence you'd want for a dedicated discussion. I've tried using them for a small reading group, and we constantly lost track of who said what about which plot twist. The platform's strength is public comments and community engagement on the story pages themselves, not private chats. For actual fan discussions, I'd only recommend it for very casual, sporadic contact.