$len = length($mime->as_string);
my $git = PublicInbox::Git->new($maindir);
my $im = PublicInbox::Import->new($git, 'test', $addr);
$len = length($mime->as_string);
my $git = PublicInbox::Git->new($maindir);
my $im = PublicInbox::Import->new($git, 'test', $addr);