Twist - Check fewer notifications, do more meaningful work. Twist is the team communication app for calmer, more organized, and more productive teamwork.
Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates
Juphy - Manage all your social media conversations, comments, reviews, and support requests in a single, shared inbox. Boost Sales on Social Channels via Messaging.
Redesk Beta - Async-first messaging app with goals, deadlines and upvotes.
Helpwise - Shared inbox for your team email addresses
Scrumie - Know what's happening in your team.