I need an ENTERPRISE level email client for the Mac

[Sal Collaziano]

I need an ENTERPRISE level email client for the Mac. I don't care it cost $50,000 per email received. I need something that can efficiently handle 10-20 email accounts without a hitch. Any recommendations?

I'm currently using Postbox and I cannot speak about how bad it is without getting myself banned for filthy language.

 

[Banglazed]

You can give Wavebox a try @ https://wavebox.io/

 

[mj_]

Have you tried Microsoft Outlook 2016? To my best knowledge Outlook is the only enterprise-level mail client for macOS, although it is heavily geared towards Microsoft Exchange in the backend and only offers rudimentary IMAP/POP3 support.

If that's what you are looking for then I would suggest taking a closer look at Mozilla Thunderbird, which should easily be able to handle 20 email accounts or more simultaneously. I've had it running with around 10 active accounts a few years back and it worked flawlessly.