The latest version. Still doesn't work with or without automatic mail checking. Pile of poo.

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On 27 Jun 2017, at 21:59, Christoph Feck <bugzilla_noreply@kde.org> wrote:
https://bugs.kde.org/show_bug.cgi?id=343558

--- Comment #4 from Christoph Feck <cfeck@kde.org> ---
Which version did you test? Additionally, I think the monitored section is not
related to new-mail checking. You could check your account settings if there is
regular checking for new mail enabled.