Translating docs to Polish and The FreeBSD Polish Documentation Project problem

I'd like to start translating FreeBSD documentation into Polish, but I've
run into a few problems.
- I don't know if I should use git or https://translate-dev.freebsd.org/ -
there is no translation project, I used a form to contact, but I don't know
if anyone will read it.
- Mail and also the person listed on
https://www.freebsd.org/docproj/translations/#polish has not entered any
translation since December 2011, so I don't know if it should still be
listed on the site. Other groups have an email like doc@kr.FreeBSD.org
maybe one could be created for Polish.

P.S. What is the condition for receiving @freebsd.org email

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