This is the new experimental package of OnionMail wizard for Claws-Mail.
Is designed for TAILS:
http://onionmail.info/network/onionmtails_1.0-1.deb
After instalation select OnionMail from main menù.
A little terminal wizard (like style BBS) configures Claws-Mail and GPG.
PS:
I do not know why at this time the project site seems to be censored in
Italy.