Before submitting a new ebuild, make sure you have a good knowledge of Portage, in particular you
should have read the portage man page ('man portage') and the ebuild man page ('man 5 ebuild').
There's also a lot of documentation on the Gentoo website, take a look at the
Gentoo Developer Handbook,
specifically to the
Ebuild
Howto and to the
Common Ebuild Mistakes.
Make sure the software you are providing has not a very restricted audience, and is not at the
earliest stages of its development.
Always provide the ebuild as a plain/text attachment. Do not attach tarballs, digests or manifests.
Include the name of the ebuild in the Subject, e.g. "package-0.1.2.ebuild (New Ebuild)".