Recovering encrypted directories

From: Dan Lyke 
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So I've gotta send my beloved Asus ZenBook off for service, and I'm
trying to recover my email (the only thing not in git or off in other
remote storage) from the drive before I do.

ecryptfs-recover-private is mounting me /tmp/ecryptfs.
directories, but this looks like the exact same thing that's in the
encrypted directory: the symlinks to the readme and .desktop and
whatnot.

If I enter a bad passphrase it complains, so I know I've got that right.

I thought maybe there was some weirdness about subdirectory mappings,
so I did a "find /tmp/encryptfs.* -iname mail", and got nothing.

Anyone got suggestions?

Dan