Spark

Spark is a personal email client, revolutionary email for teams. Instantly see what's important and clean up the rest. Your emails are sorted into personal, newsletter and notification boxes. Easily reply to important ones, and quickly clean up the rest.
We do our best work as part of a team. Spark allows you to create, discuss, and share email with your colleagues. Take your team collaboration to the next level. Collaborate with your teammates using real-time editor to compose professional emails. Invite teammates to discuss specific email and threads. Ask questions, get answers, and keep everyone in the loop. Create secure links to a specific email or conversation. Share the link on Slack, Skype, CRM, or any other medium so your team can see it and collaborate around it.