which email client on mac do you guys prefer?
https://getmailspring.com which used to be Nylas N1 (Mail) before they killed it
I used to be a big fan of Gmail or Mailplane (which is a native wrapper for Gmail). A few months ago however they removed the Quick Labels (or whatever it was called) which I used for quickly filtering my email. Since then I switched to macOS' Mail.app and I really like it.
The Smart Folders are nice to filter your emails. For example I have a Smart Folder for "Unread Notifications" which shows all my automated emails (newsletters, social media updates, etc) and only shows emails that are unread. So the moment I open an email, it disappears from that list. That way I can go through these emails real quick without needing to manually archive them. (They are already archived the moment they reach my inbox).
I'm also experimenting with a "Yesterday" Smart Folder so I can process recent emails without new ones being added throughout the day. This way I have a list I can actually finish and feel like I make progress.
Then there's one called "Old Inbox" which shows very old emails that are still in my inbox. Generally I can go through these quite quickly and archive most of them.
I don't use email much on my iPhone, but when I do I use the standard Mail app.