Great overview. Struggling with the same problem, we currently use Thunderbird and want to find something easier to use with better options to organize emails. My main issue is that Outlook as well as Thunderbird simply can't handle properly long email threads they just break apart or sometimes missing messages and that's a real pain in the bum. How is your experience with these clients handling long email threads? So far it doesn't seem worth switching to any of these clients - will keep exploring. Love the enforcement of the Dutchy stereotypes! =) However, I think we both could agree if an email client could save each employee 10-20 min a day - it's worth paying 100 EUR a month for it, no questions asked?

Thunderbird?

The best team email clients video