Patches can be sent as GitHub pull requests for initial reviews and discussion. Final patches from the community which modifies code must be sent to the openvpn-devel@lists.sourceforge.net mailing list before being accepted. Documentation and support scripts not being criticial to the running code integrity may be handled differently on a case-by-case evaluation.
Patches sent to the mailing list must be prefixed with [PATCH OpenVPN3].
Note that by contributing to the OpenVPN 3 project you accept the Contributor License Agreement described in CLA.rst.