iOS: Inbox zero can a tough goal to achieve and to maintain, but a tool like MailTamer can make the job a lot easier. With sender, contact, and recipient-based views, you'll be uncluttering your inbox in no time.
MailTamer is designed for quickly sorting through your inbox, deleting, moving, or archiving groups messages with a simple swipe and tap. It offers the standard chronological view of messages, but also provides clever ways to view messages by sender, contact, recipient and size. MailTamer supports multiple email accounts, including Gmail, Yahoo! Mail, or any service with POP or IMAP access.
MailTamer (Free) [iTunes App Store]