Mail clients for Max OS Sierra are very common app that people use to try to organize all of their different emails into one single mail client for Mac. There are many different mail clients for Mac OS Sierra, that have features that are useful and not useful. Some mail clients for Mac allow for great customization, while others have great features that help keep you organized. These great email clients for Mac OS X allow you to access all of your email service provider’s features in one place. With so many different options to choose from, we’ve created a list of the best mail clients for Mac OS Sierra that have a mix of great features, usability and value.
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Apple Mail is the built in email client provided by Apple and is one of the best mail client for macs. Apple Mail does allow for multiple mailboxes to be setup so you can have multiple accounts integrated in a single email client on your Mac OS Sierra computer. It has many great features, and every email that you setup in Apple Mail will display all new mail arriving in your inbox in the notification bar to give you a sneak peak. You also have the ability to search by attachments and attachment types, which is a great feature when you really need it.
AirMail  is an alternative mail client for Mac OS X that offers many great features and allows for usability with your IMAP-based webmail of choice. AirMail features great user interface for the design, but some of the buttons and features can sometimes be hard to see. Also, for some reason Gmail messages take some time to load and setting up Dropbox on Airmail is hard to do.
It supports a number of email accounts you can integrate with Google Apps and Exchange. It’s very easy to send attachments with an easy drag and drop of your files to your email. In case your files are stored on Google Drive or Dropbox, the app has an attachment option for them as well. Overall Airmail can be considered one of the best mail client for Mac users.
Unibox  is one of the best Mac OS X mail clients that focus more towards organization. It’s more than just sending and receiving mail with Unibox, the main feature of Unibox is the ability to filter emails by contacts. Also you have the ability to preview attachments in your email instead of having to download them first. The ability to preview attachments makes it much faster when you have limited time checking emails.
Sparrow  is a great mail client for Mac that allows you to quickly and easily clean your inbox within the app without having to do many complicated proceeders. It has been recently bought by Google and there should be great new features coming to Sparrow in the future.Sparrow allows for Facebook connection which makes it a great bonus feature. The focus of Sparrow is to provide a clutter-free environment for emailing, and you will notice the same as soon as you start working on an email in the app.
The creators of Mozilla Firefox web browser developed the Thunderbird email client . Thunderbird email client is one of the oldest mail clients available and still one of the best mail client for Mac. The set up process is very easy even though the software is a little slow. There are several great features, including being able to tab emails creating a feeling like you use when using FireFox and Chrome Internet browsers.