I would like to ship or mail boxes of cigars from US back to Europe.

What is the best way to safely ship/mail them back to preserve their freshness and protect against potential damage. I’ve read some tips on the net about individually wrapping them but that wouldnt do for a box really.

Doing it regularly would be somewhat of a chore as well.

Has anyone got any tried and true methods?

Humidity et al is one thing but what about temperature drops? protecting against hard knocks? etc?