On Wed, Apr 24, 2013 at 03:32:41PM +0200, Ralf Mardorf wrote:
>
> OTOH, I didn't find another mailer that fit halfway to my needs and that
> does work with the provider settings I need.
There is geary.
http://www.yorba.org/projects/geary/
I've never used it, myself, but it is an alternative to consider.