Zoho Mail - Email and Calendar

With full-fledged Email, Calendar and Contacts packed into one single app, Zoho Mail is the suite-st email app around.
Top Features:
Multiple account support - Add and switch between your different Zoho email accounts. Or view it all in one go through the unified Inbox with push notifications.
Conversation view - Easily keep up with long email threads with related messages bunched together.
Optimized for Tablets - Zoho Mail is fully optimized for Android Tablets of various form factors.
Quick swipe actions - Instantly archive or delete emails with customizable swipe actions.
Advanced search - Dig into your inbox in seconds with auto-suggestions and handy filter options.
Work Offline - Compose and send emails even when offline. Emails will be sent as and when internet connection becomes available.
Integrated Calendar - View / schedule your appointments and accept invites from within your email.
Contacts on the go - Filter emails from your contacts or keep in touch with them through Email or a Call.
Streams - Where you can Collaborate, Socialize and Integrate. Have productive conversations without the clutter of long emails, thus changing the way you communicate; within and between teams.