I’m currently evaluating eM Client, and so far it’s looking good, but there is one issue.
I keep getting sync errors for my Outlook.COM account. Most of the time it’s an error
when syncing the calendar, but I have seen it on other folders as well.
The error message reads:
Synchronizing folder 'email@example.com/Agenda" failed due to the following error: The remove server returned an error: (503) Server Unavailable.
This is not a configuration problem, as the account does work from time to time.