FastMail - Email, calendars, and contacts to highest standards of security, privacy and reliability.
Boomerang for Outlook - Boomerang for Outlook offers email productivity tools to track, schedule and send mails at the right time.
BlueMail - BlueMail is an email management app for Android, iOS, and Windows.
Covideo - Covideo is a Video Email Platform for Businesses that enables companies to communicate quickly and effectively with their customers.
Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Outlook4Gmail - Outlook4Gmail provides easy synchronization of your Outlook and Google accounts