This issue has been fixed in the latest version of Outlook 2016 for Mac (version 16.11, released on March 13, 2018). To get the latest update, open Outlook for Mac, go to the Help > Check for Updates menu, and follow the instructions in the AutoUpdate app. The advantages of using sync software are many – it allows you to keep your data secure, automatically updates files across all of your computing devices and also allows you to share your data over a network for easy collaboration.
A free email client comes installed and ready for use with macOS, and macOS Mail is not a bad program at all. However, you might want to examine its free alternatives. Here are the best free email clients available for macOS. Give them a try.
MacOS Mail
What We Like
Included in the Mac operating system.
Supports smart folders and robust filters.
Markup tools for annotating photos or PDFs email attachments.
VIP user notifications.
What We Don't Like
Basic design that lacks customization features.
No option to snooze emails.
Hasn't had a major design upgrade in years.
The Mail application that ships with macOS and OS X is solid, feature-rich and spam-eliminating software that is also an easy-to-use email client. Optimized to work on the Mac, the Mail app is trouble free and full featured. It can handle all your email accounts in one place.
Spark
What We Like
Clean, modern design.
Quick Replies feature for sending short, templated responses.
Smart mailboxes.
Supports multiple email accounts.
What We Don't Like
Slow tech support.
Questionable privacy policy.
Doesn't support many services.
Spark is an impressive email program that auto-organizes your inboxes and lets you postpone email easily as well as send quick one-click replies. Spark's 'Smart Inbox' bubbles messages that are important to you to the top, and uses categories of Personal, Notifications, and Newsletters.
Spark's scheduling feature allows you to assign a time period during which it will send a particular message. Select from times later today, in the evening, tomorrow, or on any date.
Mailspring
What We Like
Integrates with Gmail, iCloud, Office 365, Outlook, and Yahoo
Supports snoozing.
CPU and battery efficient.
What We Don't Like
Some features limited to paid subscription.
Doesn't support Exchange accounts.
Mandatory Mailspring ID.
Aimed at the professional email user, Mailspring boasts mail merge, reminders, and the option to schedule mail—all available in a pro edition.
With the free version, you get a clean, highly productive and expandable email program that includes thrills such as link and open tracking, quick reply templates, and undo send. However, the free edition is limited to 10 accounts.
Mozilla Thunderbird
What We Like
Flexible filtering system.
Many available plug-ins.
Tabs for navigation.
Easy to configure.
What We Don't Like
Rudimentary design.
Not as user friendly as other clients.
No longer in development.
Mozilla Thunderbird is a full-featured, secure, and functional email client. It lets you handle mail efficiently and filters away junk mail. Thunderbird is no longer in active development except for security updates, but it supplies a streamlined interface and a powerful email package.
Mozilla SeaMonkey
What We Like
All-in-one internet suite that includes email.
Customizable toolbars.
What We Don't Like
Outdated interface.
Some features not intuitive.
No mobile device support.
Outlook For Mac Os High Sierra
Never underestimate Mozilla. The company built SeaMonkey, the email component of its open source browser, on the same Mozilla platform as Firefox 51. It delivers HTML5, hardware acceleration, and improved JavaScript speed. It is a solid performer, full featured and usable.