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
Junk Email Filter - Junk Email Filter is a front end spam filtering and virus blocking service for email servers.
Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
BlueMail - BlueMail is an email management app for Android, iOS, and Windows.
MailClark - The Slack bot for external communications
Covideo - Covideo is a Video Email Platform for Businesses that enables companies to communicate quickly and effectively with their customers.