Default adress book for trusted senders?

[Jan Hofmann]

Hoi,

If there are images in an email, Roundcube offers me to "always load 
images from this sender". This is a great option, for mails like amazon, 
twitter, etc.

The Problem is, that this feature is beeing realized by just adding the 
mail address to my normal addressbook which looks very cluttered then. 
Is there a way to specify the adressbook in which those adresses should 
be stored in?

Cheers, Jan