diff --git a/Changes b/Changes
index ac518db..f46cf49 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,8 @@
 0.3x
+  The ill-named $transaction->body_size() is depreceated now, use 
+  $transaction->data_size() instead. Check your logs for LOGWARN messages 
+  about "body_size" and fix your plugins. (Hanno Hecker)
+
   Instead of failing with cryptic message, ignore lines in config/plugins
   for uninstalled plugins. (John Peacock)
 
diff --git a/lib/Qpsmtpd/Transaction.pm b/lib/Qpsmtpd/Transaction.pm
index ea1d41c..6cfaed4 100644
--- a/lib/Qpsmtpd/Transaction.pm
+++ b/lib/Qpsmtpd/Transaction.pm
@@ -141,10 +141,23 @@ sub body_write {
   }
 }
 
-sub body_size {
+sub body_size { # depreceated, use data_size() instead
+  my $self = shift;
+  $self->log(LOGWARN, "WARNING: body_size() is depreceated, use data_size() instead");
+  $self->{_body_size} || 0;
+}
+
+sub data_size {
   shift->{_body_size} || 0;
 }
 
+sub body_length {
+  my $self = shift;
+  $self->{_body_size}   or return 0;
+  $self->{_header_size} or return 0;
+  return $self->{_body_size} - $self->{_header_size};
+}
+
 sub body_resetpos {
   my $self = shift;
   
@@ -190,6 +203,10 @@ sub body_as_string {
     return $str;
 }
 
+sub body_fh {
+  return shift->{_body_file};
+}
+
 sub DESTROY {
   my $self = shift;
   # would we save some disk flushing if we unlinked the file before
@@ -294,6 +311,11 @@ use the notes field in the C<Qpsmtpd::Connection> object instead.
 Returns the temporary filename used to store the message contents; useful for
 virus scanners so that an additional copy doesn't need to be made.
 
+Calling C<body_filename()> also forces spooling to disk. A message is not 
+spooled to disk if it's size is smaller than 
+I<$self-E<gt>config("size_threshold")>, default threshold is 0, the sample
+config file sets this to 10000.
+
 =head2 body_write( $data )
 
 Write data to the end of the email.
@@ -302,7 +324,26 @@ C<$data> can be either a plain scalar, or a reference to a scalar.
 
 =head2 body_size( )
 
-Get the current size of the email.
+B<Depreceated>, Use I<data_size()> instead.
+
+=head2 data_size( )
+
+Get the current size of the email. Note that this is not the size of the 
+message that will be queued, it is the size of what the client sent after
+the C<DATA> command. If you need the size that will be queued, use
+
+ my $msg_len = length($transaction->header->as_string) 
+   + $transaction->body_length;
+
+The line above is of course only valid in I<hook_queue( )>, as other plugins
+may add headers and qpsmtpd will add it's I<Received:> header.
+
+=head2 body_length( )
+
+Get the current length of the body of the email. This length includes the
+empty line between the headers and the body. Until the client has sent 
+some data of the body of the message (i.e. headers are finished and client
+sent the empty line) this will return 0.
 
 =head2 body_resetpos( )
 
@@ -316,6 +357,12 @@ file pointer.
 
 Returns a single line of data from the body of the email.
 
+=head2 body_fh( )
+
+Returns the file handle to the temporary file of the email. This will return
+undef if the file is not opened (yet). In I<hook_data( )> or later you can 
+force spooling to disk by calling I<$transaction-E<gt>body_filename>. 
+
 =head1 SEE ALSO
 
 L<Mail::Header>, L<Qpsmtpd::Address>, L<Qpsmtpd::Connection>
diff --git a/plugins/check_basicheaders b/plugins/check_basicheaders
index 5efa438..8f90dbd 100644
--- a/plugins/check_basicheaders
+++ b/plugins/check_basicheaders
@@ -44,7 +44,7 @@ sub hook_data_post {
   my ($self, $transaction) = @_;
 
   return (DENY, "You have to send some data first")
-    if $transaction->body_size == 0;
+    if $transaction->data_size == 0;
 
   return (DENY, "Mail with no From header not accepted here")
     unless $transaction->header->get('From');
diff --git a/plugins/spamassassin b/plugins/spamassassin
index 0f3686a..5b62153 100644
--- a/plugins/spamassassin
+++ b/plugins/spamassassin
@@ -96,7 +96,7 @@ sub hook_data_post { # check_spam
   my ($self, $transaction) = @_;
 
   $self->log(LOGDEBUG, "check_spam");
-  return (DECLINED) if $transaction->body_size > 500_000;
+  return (DECLINED) if $transaction->data_size > 500_000;
 
   my $leave_old_headers = lc($self->{_args}->{leave_old_headers}) || 'rename';
 
diff --git a/plugins/virus/bitdefender b/plugins/virus/bitdefender
index b29d50c..57eb974 100644
--- a/plugins/virus/bitdefender
+++ b/plugins/virus/bitdefender
@@ -80,10 +80,10 @@ sub register {
 sub hook_data_post {
     my ( $self, $transaction ) = @_;
 
-    if ( $transaction->body_size > $self->{"_bitd"}->{"max_size"} ) {
+    if ( $transaction->data_size > $self->{"_bitd"}->{"max_size"} ) {
         $self->log( LOGWARN,
                 'Mail too large to scan ('
-              . $transaction->body_size . " vs "
+              . $transaction->data_size . " vs "
               . $self->{"_bitd"}->{"max_size"}
               . ")" );
         return (DECLINED);
diff --git a/plugins/virus/clamav b/plugins/virus/clamav
index b16d1cb..24ad7b0 100644
--- a/plugins/virus/clamav
+++ b/plugins/virus/clamav
@@ -164,9 +164,9 @@ sub register {
 sub hook_data_post {
   my ($self, $transaction) = @_;
 
-  if ($transaction->body_size > $self->{_max_size}) {
+  if ($transaction->data_size > $self->{_max_size}) {
 	$self->log(LOGWARN, 'Mail too large to scan ('.
-		$transaction->body_size . " vs $self->{_max_size})" );
+		$transaction->data_size . " vs $self->{_max_size})" );
 	return (DECLINED);
   }
 
diff --git a/plugins/virus/clamdscan b/plugins/virus/clamdscan
index 80a49d3..36f647d 100644
--- a/plugins/virus/clamdscan
+++ b/plugins/virus/clamdscan
@@ -107,8 +107,8 @@ sub hook_data_post {
     my ( $self, $transaction ) = @_;
     $DB::single = 1;
 
-    if ( $transaction->body_size > $self->{"_clamd"}->{"max_size"} * 1024 ) {
-        $self->log( LOGNOTICE, "Declining due to body_size" );
+    if ( $transaction->data_size > $self->{"_clamd"}->{"max_size"} * 1024 ) {
+        $self->log( LOGNOTICE, "Declining due to data_size" );
         return (DECLINED);
     }
 
diff --git a/plugins/virus/klez_filter b/plugins/virus/klez_filter
index 4c6b9b8..620de98 100644
--- a/plugins/virus/klez_filter
+++ b/plugins/virus/klez_filter
@@ -4,9 +4,9 @@ sub hook_data_post {
 
   # klez files are always sorta big .. how big?  Dunno. 
   return (DECLINED)
-    if $transaction->body_size < 60_000;
+    if $transaction->data_size < 60_000;
    #   220k was too little, so let's just disable the "big size check"
-   #   or $transaction->body_size > 1_000_000;
+   #   or $transaction->data_size > 1_000_000;
 
   # maybe it would be worthwhile to add a check for
   # Content-Type: multipart/alternative; here?
diff --git a/plugins/virus/sophie b/plugins/virus/sophie
index 6850590..0b35d32 100644
--- a/plugins/virus/sophie
+++ b/plugins/virus/sophie
@@ -16,8 +16,8 @@ sub hook_data_post {
     my ( $self, $transaction ) = @_;
     $DB::single = 1;
 
-    if ( $transaction->body_size > $self->{"_sophie"}->{"max_size"} * 1024 ) {
-        $self->log( LOGNOTICE, "Declining due to body_size" );
+    if ( $transaction->data_size > $self->{"_sophie"}->{"max_size"} * 1024 ) {
+        $self->log( LOGNOTICE, "Declining due to data_size" );
         return (DECLINED);
     }
 
diff --git a/plugins/virus/uvscan b/plugins/virus/uvscan
index 55447ed..bfe3345 100644
--- a/plugins/virus/uvscan
+++ b/plugins/virus/uvscan
@@ -55,7 +55,7 @@ sub hook_data_post {
   my ($self, $transaction) = @_;
  
   return (DECLINED)
-    if $transaction->body_size > 250_000;
+    if $transaction->data_size > 250_000;
 
   # Ignore non-multipart emails
   my $content_type = $transaction->header->get('Content-Type');