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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 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 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 Great documentation
The official documentation for MailMate is very thorough and helpful. It covers all options and features in a clear and efficient manner.
Both MailMate's speed and performance are highly reliable.
Pro Columns (which have gone missing in Apple Mail in Catalina)
Pro The only mail app compatible with BusyContact in Catalina
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.)
Con A little steep price
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).
Seriously dated UI and looks too much like Apple Mail
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 No POP or Exchange support
MailMate supports IMAP and IMAP only, there's no POP or Exchange support.