It has very nice Vim-like keyboard shortcuts, a good UI for setting up advanced filtering rules, it loads instantly (on my computer, at least; this has gotten much better recently), and text editing features like Smart Compose and the Googlified spellchecker beat everything else.
I can see why you might not like it if you're used to Outlook or Thunderbird, but it meets my needs perfectly. It also integrates with Google Keep, Tasks, and Calendar, which is nice.
(Some people seem to seriously underestimate how good Smart Compose is---it's learned all of my favorite combinations of words and I can basically write entire emails and documents by typing a few letters and then mashing the tab key to accept all of the autocompletions)
I can see why you might not like it if you're used to Outlook or Thunderbird, but it meets my needs perfectly. It also integrates with Google Keep, Tasks, and Calendar, which is nice.
(Some people seem to seriously underestimate how good Smart Compose is---it's learned all of my favorite combinations of words and I can basically write entire emails and documents by typing a few letters and then mashing the tab key to accept all of the autocompletions)