Washington: The up-to-date version of the Yahoo! Mail application includes a host of qualities and functions that have already been successful in increasingly popular email apps like Outlook and Inbox.

Following a major revamp in autumn 2015, the Yahoo! Mail app has been updated with a set of new functions. A group of messages can now be deleted or moved by pressing and holding the selection. Now it's possible to toggle effortlessly between Google, Outlook, AOL or several Yahoo! accounts. Yahoo! Mail is available for free download from Apple's app store and Google play store.

Microsoft's Outlook is one of the most function-rich and advanced mobile email applications out there. It can sync a user's various email accounts, calendars and files all in one handy app.

While Yahoo! Mail and Outlook can be synced with other email services, Google's Inbox can only be used with Gmail accounts. However, Google is constantly innovating with this app, including functions like the new Smart Reply tool which evaluates messages then suggests three short template responses based on their content.

One of the main contenders of Google's Inbox is Mailbox, a service that's set to shut down on February 26, 2016. Developed by Dropbox, it was supposed to change the way we use email by letting users categorize and archive messages in a new way. Users can sort messages into lists, archive them or save them for later, keeping the inbox clutter-free.