Roundcube export multiple emails in zip file

[nocty]

Hello,
I search for some solution in google but not found. I found this related post: http://www.roundcubeforum.net/requests/5436-save-export-mails.html

We need a feature with allow select multiple emails (or all) then save selected messages in a zip / tar.gz file. Like a "Archive" feature in Squirell.

Some one know a solution?

Thanks for your attention,
Regards,