Outlook 2016 for Mac, the latest iteration of the email and calendaring app, is a worthwhile upgrade for existing users. But if you don't already use Outlook, the new edition probably won't offer many reasons to switch.
Resolve meeting conflicts: In Outlook 2016 for Mac, if a meeting invitation conflicts with another one on your calendar, you can propose a new time from your calendar or email inbox.
View calendars side by side: To coordinate an event, you can view as many as three calendars side by side to schedule a meeting.
Declutter: Outlook can scan messages and, based on your past actions, move low-priority messages out of your inbox and into a folder called Clutter.
Message preview: The new message preview feature gives you a glimpse into a message before opening it.
Cross-platform: Outlook is of course available on Windows as well as through Outlook.com, and you can run Outlook apps on iOS and Android devices.
Email push: The update adds support for push email, so messages will be transferred quicker than ever before to your inbox.
Not for everyone: With so many free or cheaper email offerings available, getting an Office 365 subscription ($6.99 per month or $69 for a year) just for Outlook may not be the best use of your money.
If you depend on Office as part of your computing life, the new version of Outlook offers plenty to like. But with so many compelling email choices for OS X users -- from OS X's Mail client to ever-present Web-based services from Google, Yahoo, and others -- Outlook isn't a necessity.