When comparing MailMate vs Canary Mail, the Slant community recommends MailMate for most people. In the question“What are the best e-mail clients for macOS?” MailMate is ranked 1st while Canary Mail is ranked 7th. The most important reason people chose MailMate is:
While most email clients support searching content from their To, From and Cc fields, MailMate lets users search down to the different sections of these fields. For example, you can search for the address only, or the name only, or even any one of the embedded headers. Subjects can be searched by prefixes, or by specific words which may be contained within and so on.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Extremely powerful search features
While most email clients support searching content from their To, From and Cc fields, MailMate lets users search down to the different sections of these fields. For example, you can search for the address only, or the name only, or even any one of the embedded headers. Subjects can be searched by prefixes, or by specific words which may be contained within and so on.

Pro Keyboard focused
MailMate is extremely keyboard-focused. Almost every action can be configured to be achieved through a key combination in the settings. With the help of the keyboard shortcuts you can easily navigate through thousands of messages to find the one you need.
Pro Markdown support
Markdown is a way to format text quickly using only the keyboard. Different text characters create different text: for example, putting asterisks (*) around a word or group of words will italicize them, while double asterisks (**) will bold that text. Markdown is a basic formatting system that can then be adapted to HTML or other formats.
Pro Clean, no-fuss interface
MailMate's UI is very basic. The icons are limited to some default MacOS standard folder images and the interface is very clean and simple, showing only what's needed without any fuss or distracting colours. Instead, opting for a mostly grey interface, with a sprinkle of some other colours here and there.
Pro Smart folders on steroids
- you can choose out of tenths of mailheaders (several hundreds including virtual headers)
- "<header> is (not) in <folder> <header>" operator which enables you to do cool filters
- each smart folder can have smart subfolders by an user definable key
Pro Reliable
Both MailMate's speed and performance are highly reliable.
Pro Great documentation
The official documentation for MailMate is very thorough and helpful. It covers all options and features in a clear and efficient manner.
Pro Columns (which have gone missing in Apple Mail in Catalina)
Pro Faster
Faster the Mail.app specially if you have many emails
Pro Nice tagging support
One can define tupels of IMAP keywords and tags (which are shown in UI). In case of Gmail one can define triples of IMAP Keywords, Tags, and gmail lables.
(in Thunderbird one can only define the tags, whereas the corresponding IMAP keyword is not user-definable.)
Pro The only mail app compatible with BusyContact in Catalina
Pro Multiple Signatures for Multiple Accounts including ALIASES
You can assign your default signature to an ALIAS for the same account or create an altogether new one.
Pro No personal data stored on servers
No access tokens, passwords, attachments or email itself is stored on Canary servers.
Pro Seamlessly integrates with iOS verion
Gone are the days of manual setup of phone email clients! Canary Mail syncs not just your accounts but all of your settings and even signatures on iCloud.
Pro Local email database is encrypted on disk
Canary stores your local email database encrypted.
Pro Gorgeous and intuitive
Pro Pretty Good Privacy or PGP built-in
Cons
Con Hard to master
For occasional users who only write emails to friends and loved ones, MailMate's features may be a bit of an overkill since it's designed for power users who spend a lot of time writing and reading/organizing emails.
Con Not so "native" Gmail support
Because it's more IMAP native, and Gmail uses some non-native IMAP stuff (according to MailMate's documentation).
Con Ugly!
Seriously dated UI and looks too much like Apple Mail
Con No POP or Exchange support
MailMate supports IMAP and IMAP only, there's no POP or Exchange support.
Con A little steep price
$50
Con Missing mainstream features
No functionality for user-defined Gmail message-tagging, or moving/copying to IMAP folders. Might be acceptable in a free app, but not in one with premium pricing.
Con Buggy
It adds random pins to old emails which then stay on top of the inbox list
Con Poor handling of new emails
You sometimes need to wait very long before your email actually gets delivered.
Con Windows moves randomly
When you create a new email, the new windows is often misplaced so that you have to move it to reach the "Send" button.
Con Poor text editing capabilities
The cursor is laggy so you're better off using keyboard shortcuts.
Con Show NO show
It'll show a new email on a counter, but you're not able to view them.
