Retrieve conversations containing unread messages with user mentions

I’d like to request a feature that allows us to retrieve conversations that contain unread messages with user mentions (e.g., messages that include @username). Currently, there doesn't seem to be a direct way via the SDK or REST API to filter unread conversations based on the presence of mentions.

This would be extremely useful for building features like real-time mention alerts or prioritizing important conversations in the UI.

Request Summary:

• A way to flag or filter messages that contain @mentions

• A method to retrieve only those conversations that have unread messages with mentions