Clupdate - Follow your favorite team across major social media
Boomerang Respondable - Write perfect emails with Artificial Intelligence
Slack Platform News - News and updates from the Slack Platform direct to your team
Mailbutler - Mailbutler adds lacking functionality to email clients and increases your productivity
Top Daily Hunts in Slack - A simple, fast way to browse news within Slack
Boomerang for Gmail - Boomerang for Gmail is a Firefox / Chrome plugin that lets you take control of when you send and receive email messages.