Dynamically Personalized Emails by QGraph - Hyper-personalized emails for E-commerce
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
InboxSDK - First usable API to write Gmail Apps for 1B active users
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Nova Inbox - Personalize emails in seconds, right from your inbox
eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.