I am using Claws Mail v3.13.2
on Ubuntu 16.04
. Before upgrading to 16.04 from 15.10 the claws mail plugin Notification
managed to minimise and/or close claws mail to tray (i.e., in this little mail symbol in the top right corner - the notification/indicator applet).
However, this does not work anymore under 16.04.
When I minimise claws mail it gets minimised as every other program into launcher panel. When I close claws mail it just terminates the program.
So how do I get claws mail to minimise/close to tray again?
Ps.: Liferae
closes/minimises to tray as expected and can be re-opened by clicking on the mail symbol in the top right corner.
PPs.: Under 15.10 the indicator applet even allowed me to receive new mails and open a new (composing) mail window. So it seems that the integration of claws mail under 15.10 worked well but was somehow 'removed' or damaged in 16.04.