This is a feature I designed for Swarm's messaging tab. The challenge of this feature design was flattening both messages and notifications into one tab. The challenge became how to make these items distinct enough, yet flat enough in content to be presented in one tab, where this tab previously had two tabs: one for messages and one for notifications.
Along with the flattened tabs, I introduced a new 'new message' icon in the upper right of these screens. Whereas previously this icon was hairline and thin, I included thicker lines and more vibrant colors to be consistent with Swarm's post 3.0 visual styling.