Thunderbird, Outlook for work.

lNomNoml:

Thunderbird, Outlook for work.

OWA

Thunderbird at home, but it's getting slower and slower. Outlook at work because I have no choice - it's ok.

Opera on w10, Thunderbird on Mint, K9 on android phone.

For me as a basic user, I'm not sure there is any significant difference between them although opera not opening pdf by default is a annoying.

Gmail based at home and work, so Wavebox works nicely.

Browser, dont use clients anymore

I just use Gmail these days - through a browser.

I've slowly moved away from using a separate client (had been Thunderbird) - to the point that when I purchased a new laptop and had to reinstall Windows on the other earlier this year didn't bother installing a separate email app. 

For offline access, Gmail now has it baked in - while it does use the full Gmail interface (as opposed to that cut-down version one could add as a plugin), it is still relatively limited time-wise (only up to the last three months). See https://www.computerworld.com/article/3271068/email/gmail-offline.html. But in reality, I find I'm rarely in a situation where I have no online access and need access to old emails - hence in the real world Gmail via browser works just fine.

Outlook generally for my communication, Thunderbird for testing / development purposes. 

I miss the days of Mutt (http://www.mutt.org/)

gmail.com

outlook for work, cos thats why my work uses.

but I gave up on a desktop email app many years ago.

For my linux clients I use mutt.