lei 1.9.0-1 (i386 binary) in ubuntu oracular

 lei is a command-line tool for importing and searching email,
 regardless of whether it is from a personal mailbox or a public-inbox.
 lei supports a local, writable store built on top of public-inbox formats.
 .
 Warning: lei is still in its early stages and may destroy mail.
 Be sure to have backups of destinations lei writes to.