Konstantin Ryabitsev has announced
a new service providing @linux.dev mailboxes for people to use
with kernel development. The documentation page
has more information. “This is a BETA offering. Currently, it is
only available to people listed in the MAINTAINERS file. We hope to be able
to offer it to everyone else who can demonstrate an ongoing history of
contributions to the Linux kernel (patches, git commits, mailing list
discussions, etc).“

Source: LWN.net – linux.dev mailboxes for kernel developers