My favorite e-mail client - Mailbird
Just showing off a couple features of Mailbird, an e-mail client that really helped my productivity. I'm always looking for tools that could work for me instead of making me work and this really seemed to do it.
You need to purchase it /sub to it if you want to run more than one e-mail account at the same time- which I normally do, but wait for a discount offer :)
https://www.getmailbird.com/