my $msg_body_1 = '
   line 1\n
   line 2\n
   line3a  \t  \line3b\n
   line4
   \n\n
';

my $msg_body_2 = '
    \n\n
    line 5\n
    line 6\n
    line7a  \t  \line7b\n
    line8 
    \n\n
';

my $other_crap = 'blah blah blah';

print $msg_body_1 $other_crap $msg_body_2;