Feature Request: add Sender to Blacklist

[merlink01]

In the Message List there could be an entry in the rightclick menu:

Add Sender to Blacklist, this could be practical :-)

[PeterSurda]

This was requested by several people, it appears to be important.

[PeterSurda]

This has been done in mailchuck@c09981b and mailchuck@51232d3 and the feedback has been very positive, it really appears to significantly improve the user experience with spam.