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
HelpScout - Help Scout is a simple, straightforward way to provide excellent support
Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.
Nylas Mail - The Nylas Cloud API powers your application with email, calendar & contacts features. Built-in features for better email, calendar, and contact management.
Helpy.io - Helpy is a tightly integrated customer support platform that combines ticketing, knowledge base, community and AI support chat.