--- a/mail/locales/en-US/chrome/messenger/am-addressing.dtd
+++ b/mail/locales/en-US/chrome/messenger/am-addressing.dtd
@@ -26,8 +26,12 @@
 <!ENTITY then.accesskey                       "T">
 <!ENTITY aboveQuote.label                     "start my reply above the quote">
 <!ENTITY belowQuote.label                     "start my reply below the quote">
 <!ENTITY selectAndQuote.label                 "select the quote">
 <!ENTITY place.label                          "and place my signature">
 <!ENTITY place.accesskey                      "s">
 <!ENTITY belowText.label                      "below the quote (recommended)">
 <!ENTITY aboveText.label                      "below my reply (above the quote)">
+<!ENTITY includeSigOnReply.label              "Include signature for replies">
+<!ENTITY includeSigOnReply.accesskey          "s">
+<!ENTITY includeSigOnForward.label            "Include signature for forwards">
+<!ENTITY includeSigOnForward.accesskey        "w">

--- a/mailnews/base/prefs/resources/content/am-addressingOverlay.xul
+++ b/mailnews/base/prefs/resources/content/am-addressingOverlay.xul
@@ -77,29 +77,42 @@
         <menulist wsm_persist="true" id="identity.replyOnTop" oncommand="quoteEnabling();"
                   pref="true" preftype="int" prefattribute="value"
                   prefstring="mail.identity.%identitykey%.reply_on_top">
           <menupopup>
             <menuitem value="1" label="&aboveQuote.label;"/>
             <menuitem value="0" label="&belowQuote.label;"/>
             <menuitem value="2" label="&selectAndQuote.label;"/>
           </menupopup>
-        </menulist>        
+        </menulist>
       </hbox>
       <hbox class="indent" align="center" id="placeBox">
         <label value="&place.label;" accesskey="&place.accesskey;" control="identity.sig_bottom"/>
         <menulist wsm_persist="true" id="identity.sig_bottom" genericattr="true"
                   pref="true" preftype="bool" prefattribute="value"
                   prefstring="mail.identity.%identitykey%.sig_bottom">
           <menupopup>
             <menuitem value="true" label="&belowText.label;"/>
             <menuitem value="false" label="&aboveText.label;"/>
           </menupopup>
         </menulist>
       </hbox>
+
+      <checkbox id="identity.sig_on_reply" wsm_persist="true"
+                label="&includeSigOnReply.label;"
+                accesskey="&includeSigOnReply.accesskey;"
+                preftype="bool" genericattr="true"
+                prefstring="mail.identity.%identitykey%.sig_on_reply"/>
+
+      <checkbox id="identity.sig_on_fwd" wsm_persist="true"
+                label="&includeSigOnForward.label;"
+                accesskey="&includeSigOnForward.accesskey;"
+                preftype="bool" genericattr="true"
+                prefstring="mail.identity.%identitykey%.sig_on_fwd"/>
+
     </groupbox>
 
     <separator class="thin"/>
 
     <groupbox>
       <caption label="&addressingGroupTitle.label;"/>
 #ifndef MOZ_THUNDERBIRD
       <hbox align="center">

--- a/mailnews/base/prefs/resources/content/am-identity-edit.js
+++ b/mailnews/base/prefs/resources/content/am-identity-edit.js
@@ -112,16 +112,18 @@ function initCompositionAndAddressing(id
   document.getElementById('identity.overrideGlobal_Pref').value = addressingIdentity.overrideGlobalPref;
 #ifndef MOZ_THUNDERBIRD
   document.getElementById('identity.autocompleteToMyDomain').checked = addressingIdentity.autocompleteToMyDomain;
 #endif
   document.getElementById('identity.composeHtml').checked = addressingIdentity.composeHtml;
   document.getElementById('identity.autoQuote').checked = addressingIdentity.autoQuote;
   document.getElementById('identity.replyOnTop').value = addressingIdentity.replyOnTop;
   document.getElementById('identity.sig_bottom').value = addressingIdentity.sigBottom;
+  document.getElementById('identity.sig_on_reply').checked = addressingIdentity.sigOnReply;
+  document.getElementById('identity.sig_on_fwd').checked = addressingIdentity.sigOnForward;
 
   onInitCompositionAndAddressing(); // am-addressing.js method
 }
 
 function onOk()
 {
   if (!validEmailAddress())
     return false;
@@ -129,17 +131,17 @@ function onOk()
   // if we are adding a new identity, create an identity, set the fields and add it to the
   // account. 
   if (!gIdentity)
   {
     // ask the account manager to create a new identity for us
     var accountManager = Components.classes["@mozilla.org/messenger/account-manager;1"]
         .getService(Components.interfaces.nsIMsgAccountManager);
     gIdentity = accountManager.createIdentity();
-    
+
     // copy in the default identity settings so we inherit lots of stuff like the defaul drafts folder, etc.
     gIdentity.copy(gAccount.defaultIdentity);
 
     // assume the identity is valid by default?
     gIdentity.valid = true;
 
     // add the identity to the account
     gAccount.addIdentity(gIdentity);
@@ -157,17 +159,17 @@ function onOk()
   return true;
 }
 
 // returns false and prompts the user if
 // the identity does not have an email address
 function validEmailAddress()
 {
   var emailAddress = document.getElementById('identity.email').value;
-  
+
   // quickly test for an @ sign to test for an email address. We don't have
   // to be anymore precise than that.
   if (emailAddress.lastIndexOf("@") < 0)
   {
     // alert user about an invalid email address
 
     var prefBundle = document.getElementById("bundle_prefs");
 
@@ -194,17 +196,17 @@ function saveIdentitySettings(identity)
     identity.htmlSigFormat = document.getElementById('identity.htmlSigFormat').checked;
 
     identity.attachVCard = document.getElementById('identity.attachVCard').checked;
     identity.escapedVCard = document.getElementById('identity.escapedVCard').value;
     identity.smtpServerKey = document.getElementById('identity.smtpServerKey').value;
 
     var attachSignaturePath = document.getElementById('identity.signature').value;
     identity.signature = null; // this is important so we don't accidentally inherit the default
-    
+
     if (attachSignaturePath)
     {
       // convert signature path back into a nsIFile
       var sfile = Components.classes["@mozilla.org/file/local;1"]
                   .createInstance(Components.interfaces.nsILocalFile);
       sfile.initWithPath(attachSignaturePath);
       if (sfile.exists())
         identity.signature = sfile;
@@ -236,17 +238,19 @@ function saveAddressingAndCompositionSet
   identity.directoryServer = document.getElementById('identity.directoryServer').value;
   identity.overrideGlobalPref = document.getElementById('identity.overrideGlobal_Pref').value == "true";
 #ifndef MOZ_THUNDERBIRD
   identity.autocompleteToMyDomain = document.getElementById('identity.autocompleteToMyDomain').checked;
 #endif
   identity.composeHtml = document.getElementById('identity.composeHtml').checked;
   identity.autoQuote = document.getElementById('identity.autoQuote').checked;
   identity.replyOnTop = document.getElementById('identity.replyOnTop').value;
-  identity.sigBottom = document.getElementById('identity.sig_bottom').value == 'true';  
+  identity.sigBottom = document.getElementById('identity.sig_bottom').value == 'true';
+  identity.sigOnReply = document.getElementById('identity.sig_on_reply').checked;
+  identity.sigOnForward = document.getElementById('identity.sig_on_fwd').checked;
 }
 
 function selectFile()
 {
   var fp = Components.classes["@mozilla.org/filepicker;1"]
                      .createInstance(nsIFilePicker);
 
   var prefBundle = document.getElementById("bundle_prefs");
@@ -294,17 +298,17 @@ function GetSigFolder()
 
 // Signature textbox is active unless option to select from file is checked.
 // If a signature is need to be attached, the associated items which
 // displays the absolute path to the signature (in a textbox) and the way
 // to select a new signature file (a button) are enabled. Otherwise, they
 // are disabled. Check to see if the attachSignature is locked to block
 // broadcasting events.
 function setupSignatureItems()
-{ 
+{
   var signature = document.getElementById("identity.signature");
   var browse = document.getElementById("identity.sigbrowsebutton");
   var htmlSigText = document.getElementById("identity.htmlSigText");
   var htmlSigFormat = document.getElementById("identity.htmlSigFormat");
   var attachSignature = document.getElementById("identity.attachSignature");
   var checked = attachSignature.checked;
 
   if (checked)
@@ -343,17 +347,17 @@ function editVCard()
   window.openDialog("chrome://messenger/content/addressbook/abNewCardDialog.xul",
                     "",
                     "chrome,resizable=no,titlebar,modal",
                     {escapedVCardStr:escapedVCard.value, okCallback:editVCardCallback,
                      titleProperty:"editVCardTitle", hideABPicker:true});
 }
 
 function getAccountForFolderPickerState()
-{ 
+{
   return gAccount;
 }
 
 // when the identity panel is loaded, the smtp-list is created
 // and the in prefs.js configured smtp is activated
 function loadSMTPServerList()
 {
   var smtpService = Components.classes["@mozilla.org/messengercompose/smtp;1"].getService(Components.interfaces.nsISmtpService);

--- a/mailnews/base/public/nsIMsgIdentity.idl
+++ b/mailnews/base/public/nsIMsgIdentity.idl
@@ -34,82 +34,120 @@
  * the provisions above, a recipient may use your version of this file under
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */
 
 #include "nsISupports.idl"
 #include "nsILocalFile.idl"
 
-/*
- * this interface contains all the personal outgoing mail information
+/**
+ * This interface contains all the personal outgoing mail information
  * for a given person.
- * each identity is identified by a key, which is the <id> string in
- * the identity preferences, such as in
- * mail.identity.<id>.replyTo
- *
+ * Each identity is identified by a key, which is the <id> string in
+ * the identity preferences, such as in mail.identity.<id>.replyTo.
  */
-
-
-[scriptable, uuid(592d1e34-acab-4817-8247-0299fdc55204)]
+[scriptable, uuid(2bf98491-1503-4a69-a862-ab6b8e5beb68)]
 interface nsIMsgIdentity : nsISupports {
-  /* internal preferences ID */
+  /**
+   * Internal preferences ID.
+   */
   attribute ACString key;
 
-  /*
-   *overriding display name for this identity. if this pref is not set
-   * then this will return some composed string from the fullname and email
+  /**
+   * Overriding display name for this identity. If this pref is not set
+   * then this will return some composed string from the fullname and email.
    */
   attribute AString identityName;
 
-  /* user's full name, i.e. John Doe */
+  /**
+   * User's full name, i.e. John Doe.
+   */
   attribute AString fullName;
 
-  /* user's e-mail address, i.e. john@doe.com */
+  /**
+   * User's e-mail address, i.e. john@doe.com.
+   */
   attribute ACString email;
 
-  /* optional replyTo address, i.e. johnNOSPAM@doe.com */
+  /**
+   * Optional replyTo address, i.e. johnNOSPAM@doe.com.
+   */
   attribute ACString replyTo;
 
-  /* optional organization */
+  /**
+   * Optional organization.
+   */
   attribute AString organization;
 
-  /* should we compose with HTML by default? */
+  /**
+   * Should we compose with HTML by default?
+   */
   attribute boolean composeHtml;
 
-  /* should we attach a signature by default? */
+  /**
+   * Should we attach a signature by default?
+   */
   attribute boolean attachSignature;
 
-  /* should we attach a vcard by default? */
+  /**
+   * Should we attach a vcard by default?
+   */
   attribute boolean attachVCard;
 
-  /* should we automatically quote the original message? */
+  /**
+   * Should we automatically quote the original message?
+   */
   attribute boolean autoQuote;
 
-  /* what should our quoting preference be? */
+  /**
+   * What should our quoting preference be?
+   */
   attribute long replyOnTop;
 
-  /* what should our signature be at the end of the quoted text when replying above it? */
+  /**
+   * Should our signature be at the end of the quoted text when replying
+   * above it?
+   */
   attribute boolean sigBottom;
 
-  /* the current signature if read from file */
+  /**
+   * Include a signature when forwarding a message?
+   */
+  attribute boolean sigOnForward;
+
+  /**
+   * Include a signature when replying to a message?
+   */
+  attribute boolean sigOnReply;
+
+  /**
+   * The current signature file.
+   */
   attribute nsILocalFile signature;
+
   attribute long signatureDate;
 
-  /* text (format=false) or HTML (format=true) signature if set by preference */
+  /**
+   * Signature text; plain text or HTML depending on htmlSigText.
+   */
   attribute AString htmlSigText;
+
+  /**
+   * Is the htmlSigText plain text or HTML?
+   */
   attribute boolean htmlSigFormat;
 
   attribute ACString escapedVCard;
 
   attribute boolean doFcc;
   /// URI for the fcc (Sent) folder
   attribute ACString fccFolder;
   attribute boolean fccReplyFollowsParent;
-  
+
   /**
    * @{
    * these attributes control whether the special folder pickers for
    * fcc, drafts,archives, and templates are set to pick between servers
    * (e.g., Sent on accountName) or to pick any folder on any account.
    * "0" means choose between servers; "1" means use the full folder picker.
    */
   attribute ACString fccFolderPickerMode;
@@ -167,34 +205,34 @@ interface nsIMsgIdentity : nsISupports {
 
   /**
    * default request for return receipt option for this identity
    * if this is set, the Return Receipt menu item on the compose
    * window will be checked
    */
   readonly attribute boolean requestReturnReceipt;
   readonly attribute long receiptHeaderType;
-  
+
   /**
    * default request for DSN option for this identity
    * if this is set, the DSN menu item on the compose
    * window will be checked
    */
   readonly attribute boolean requestDSN;
 
   /* copy the attributes of the identity we pass in */
   void copy(in nsIMsgIdentity identity);
 
   /** 
    * these generic getter / setters, useful for extending mailnews 
    * note, these attributes persist across sessions
    */
   AString getUnicharAttribute(in string name);
   void setUnicharAttribute(in string name, in AString value);
-  
+
   ACString getCharAttribute(in string name);
   void setCharAttribute(in string name, in ACString value);
 
   boolean getBoolAttribute(in string name);
   void setBoolAttribute(in string name, in boolean value);
 
   long getIntAttribute(in string name);
   void setIntAttribute(in string name, in long value);

--- a/mailnews/base/util/nsMsgIdentity.cpp
+++ b/mailnews/base/util/nsMsgIdentity.cpp
@@ -175,16 +175,18 @@ NS_IMPL_IDPREF_BOOL(ComposeHtml, "compos
 NS_IMPL_IDPREF_BOOL(AttachVCard, "attach_vcard")
 NS_IMPL_IDPREF_BOOL(AttachSignature, "attach_signature")
 NS_IMPL_IDPREF_WSTR(HtmlSigText, "htmlSigText")
 NS_IMPL_IDPREF_BOOL(HtmlSigFormat, "htmlSigFormat")
 
 NS_IMPL_IDPREF_BOOL(AutoQuote, "auto_quote")
 NS_IMPL_IDPREF_INT(ReplyOnTop, "reply_on_top")
 NS_IMPL_IDPREF_BOOL(SigBottom, "sig_bottom")
+NS_IMPL_IDPREF_BOOL(SigOnForward, "sig_on_fwd")
+NS_IMPL_IDPREF_BOOL(SigOnReply, "sig_on_reply")
 
 NS_IMPL_IDPREF_INT(SignatureDate,"sig_date")
 
 NS_IMPL_IDPREF_BOOL(DoFcc, "fcc")
 
 NS_IMPL_FOLDERPREF_STR(FccFolder, "fcc_folder", "Sent", nsMsgFolderFlags::SentMail)
 NS_IMPL_IDPREF_STR(FccFolderPickerMode, "fcc_folder_picker_mode")
 NS_IMPL_IDPREF_BOOL(FccReplyFollowsParent, "fcc_reply_follows_parent")
@@ -563,16 +565,18 @@ nsMsgIdentity::Copy(nsIMsgIdentity *iden
     COPY_IDENTITY_STR_VALUE(identity,GetStationeryFolder,SetStationeryFolder)
     COPY_IDENTITY_BOOL_VALUE(identity,GetAttachSignature,SetAttachSignature)
     COPY_IDENTITY_FILE_VALUE(identity,GetSignature,SetSignature)
     COPY_IDENTITY_WSTR_VALUE(identity,GetHtmlSigText,SetHtmlSigText)
     COPY_IDENTITY_BOOL_VALUE(identity,GetHtmlSigFormat,SetHtmlSigFormat)
     COPY_IDENTITY_BOOL_VALUE(identity,GetAutoQuote,SetAutoQuote)
     COPY_IDENTITY_INT_VALUE(identity,GetReplyOnTop,SetReplyOnTop)
     COPY_IDENTITY_BOOL_VALUE(identity,GetSigBottom,SetSigBottom)
+    COPY_IDENTITY_BOOL_VALUE(identity,GetSigOnForward,SetSigOnForward)
+    COPY_IDENTITY_BOOL_VALUE(identity,GetSigOnReply,SetSigOnReply)
     COPY_IDENTITY_INT_VALUE(identity,GetSignatureDate,SetSignatureDate)
     COPY_IDENTITY_BOOL_VALUE(identity,GetAttachVCard,SetAttachVCard)
     COPY_IDENTITY_STR_VALUE(identity,GetEscapedVCard,SetEscapedVCard)
     COPY_IDENTITY_STR_VALUE(identity,GetSmtpServerKey,SetSmtpServerKey)
     return NS_OK;
 }
 
 NS_IMETHODIMP

--- a/mailnews/compose/src/nsMsgCompose.cpp
+++ b/mailnews/compose/src/nsMsgCompose.cpp
@@ -578,16 +578,17 @@ nsMsgCompose::ConvertAndLoadComposeWindo
   nsCOMPtr<nsIHTMLEditor> htmlEditor (do_QueryInterface(m_editor));
   nsCOMPtr<nsIPlaintextEditor> textEditor (do_QueryInterface(m_editor));
   nsCOMPtr<nsIEditorMailSupport> mailEditor (do_QueryInterface(m_editor));
   m_editor->BeginTransaction();
   PRInt32 reply_on_top = 0;
   PRBool sig_bottom = PR_TRUE;
   m_identity->GetReplyOnTop(&reply_on_top);
   m_identity->GetSigBottom(&sig_bottom);
+
   PRBool sigOnTop = (reply_on_top == 1 && !sig_bottom);
   if (aQuoted)
   {
     mInsertingQuotedContent = PR_TRUE;
     if (!aPrefix.IsEmpty())
     {
       if (!aHTMLEditor)
         aPrefix.AppendLiteral("\n");
@@ -608,17 +609,17 @@ nsMsgCompose::ConvertAndLoadComposeWindo
 
       m_editor->EndOfDocument();
     }
 
     mInsertingQuotedContent = PR_FALSE;
 
     (void)TagEmbeddedObjects(mailEditor);
 
-    if (!aSignature.IsEmpty() )
+    if (!aSignature.IsEmpty())
     {
       //we cannot add it on top earlier, because TagEmbeddedObjects will mark all images in the signature as "moz-do-not-send"
       if( sigOnTop )
         m_editor->BeginningOfDocument();
 
       if (aHTMLEditor && htmlEditor)
         htmlEditor->InsertHTML(aSignature);
       else if (textEditor)
@@ -753,16 +754,40 @@ nsMsgCompose::ConvertAndLoadComposeWindo
 
 #ifdef MSGCOMP_TRACE_PERFORMANCE
   nsCOMPtr<nsIMsgComposeService> composeService (do_GetService(NS_MSGCOMPOSESERVICE_CONTRACTID));
   composeService->TimeStamp("Finished inserting data into the editor. The window is finally ready!", PR_FALSE);
 #endif
   return NS_OK;
 }
 
+/**
+ * Check the identity pref to include signature on replies and forwards.
+ */
+PRBool nsMsgCompose::CheckIncludeSignaturePrefs(nsIMsgIdentity *identity)
+{
+  PRBool includeSignature = PR_TRUE;
+  switch (mType)
+  {
+    case nsIMsgCompType::ForwardInline:
+    case nsIMsgCompType::ForwardAsAttachment:
+      identity->GetSigOnForward(&includeSignature);
+      break;
+    case nsIMsgCompType::Reply:
+    case nsIMsgCompType::ReplyAll:
+    case nsIMsgCompType::ReplyToList:
+    case nsIMsgCompType::ReplyToGroup:
+    case nsIMsgCompType::ReplyToSender:
+    case nsIMsgCompType::ReplyToSenderAndGroup:
+      identity->GetSigOnReply(&includeSignature);
+      break;
+  }
+  return includeSignature;
+}
+
 nsresult
 nsMsgCompose::SetQuotingToFollow(PRBool aVal)
 {
   mQuotingToFollow = aVal;
   return NS_OK;
 }
 
 NS_IMETHODIMP
@@ -3946,16 +3971,19 @@ nsMsgCompose::ProcessSignature(nsIMsgIde
   nsAutoString  sigData;
   nsAutoString sigOutput;
   PRInt32      reply_on_top = 0;
   PRBool       sig_bottom = PR_TRUE;
 
   nsCOMPtr<nsILocalFile> sigFile;
   if (identity)
   {
+    if (!CheckIncludeSignaturePrefs(identity))
+      return NS_OK;
+
     identity->GetReplyOnTop(&reply_on_top);
     identity->GetSigBottom(&sig_bottom);
     rv = identity->GetAttachSignature(&useSigFile);
     if (NS_SUCCEEDED(rv) && useSigFile)
     {
       useSigFile = PR_FALSE;  // by default, assume no signature file!
 
       rv = identity->GetSignature(getter_AddRefs(sigFile));
@@ -4190,17 +4218,16 @@ nsMsgCompose::BuildBodyMessageAndSignatu
       break;
 
     default :
       addSignature = PR_FALSE;
       break;
   }
 
   nsAutoString tSignature;
-
   if (addSignature)
     ProcessSignature(m_identity, addDashes, &tSignature);
 
   // if type is new, but we have body, this is probably a mapi send, so we need to
   // replace '\n' with <br> so that the line breaks won't be lost by html.
   // if mailtourl, do the same.
   if (m_composeHTML && (mType == nsIMsgCompType::New || mType == nsIMsgCompType::MailToUrl))
     body.ReplaceSubstring(NS_LITERAL_STRING("\n").get(), NS_LITERAL_STRING("<br>").get());
@@ -5243,16 +5270,19 @@ nsresult nsMsgCompose::SetSignature(nsIM
           }
 
         } while (node != lastNode && tempNode);
         m_editor->EndTransaction();
       }
     }
   }
 
+  if (!CheckIncludeSignaturePrefs(identity))
+    return NS_OK;
+
   //Then add the new one if needed
   nsAutoString aSignature;
 
   // No delimiter needed if not a compose window
   PRBool noDelimiter;
   switch (mType)
   {
     case nsIMsgCompType::New :

--- a/mailnews/compose/src/nsMsgCompose.h
+++ b/mailnews/compose/src/nsMsgCompose.h
@@ -95,24 +95,17 @@ private:
 
   PRInt32                       mWhatHolder;
 
   nsresult                      LoadDataFromFile(nsILocalFile *file,
                                                  nsString &sigData,
                                                  PRBool aAllowUTF8 = PR_TRUE,
                                                  PRBool aAllowUTF16 = PR_TRUE);
 
-/*
-  nsresult                      GetCompFields(nsMsgCompFields **aCompFields) 
-                                {
-                                  if (aCompFields)
-                                    *aCompFields = m_compFields;
-                                  return NS_OK;
-                                }
- */
+  PRBool                        CheckIncludeSignaturePrefs(nsIMsgIdentity *identity);
   nsresult                      GetIdentity(nsIMsgIdentity **aIdentity)
                                 {
                                   *aIdentity = m_identity;
                                   return NS_OK;
                                 }
   //m_folderName to store the value of the saved drafts folder.
   nsCString                     m_folderName;
 

--- a/mailnews/mailnews.js
+++ b/mailnews/mailnews.js
@@ -428,16 +428,18 @@ pref("mail.identity.default.bcc_list", "
 
 pref("mail.identity.default.draft_folder", "mailbox://nobody@Local%20Folders/Drafts");
 pref("mail.identity.default.stationery_folder", "mailbox://nobody@Local%20Folders/Templates");
 pref("mail.identity.default.directoryServer", "");
 pref("mail.identity.default.overrideGlobal_Pref", false);
 pref("mail.identity.default.auto_quote", true);
 pref("mail.identity.default.reply_on_top", 0); // 0=bottom 1=top 2=select
 pref("mail.identity.default.sig_bottom", true); // true=below quoted false=above quoted
+pref("mail.identity.default.sig_on_fwd", false); // Include signature on fwd?
+pref("mail.identity.default.sig_on_reply", true); // Include signature on re?
 
 // default to archives folder on same server.
 pref("mail.identity.default.archives_folder_picker_mode", "0");
 
 // Headers to always add to outgoing mail
 // examples: "header1,header2"
 // pref("mail.identity.id1.headers", "header1");
 // user_pref("mail.identity.id1.header.header1", "X-Mozilla-Rocks: True")

--- a/suite/locales/en-US/chrome/mailnews/pref/am-addressing.dtd
+++ b/suite/locales/en-US/chrome/mailnews/pref/am-addressing.dtd
@@ -28,8 +28,12 @@
 <!ENTITY then.accesskey                       "T">
 <!ENTITY aboveQuote.label                     "start my reply above the quote">
 <!ENTITY belowQuote.label                     "start my reply below the quote">
 <!ENTITY selectAndQuote.label                 "select the quote">
 <!ENTITY place.label                          "and place my signature">
 <!ENTITY place.accesskey                      "s">
 <!ENTITY belowText.label                      "below the quote (recommended)">
 <!ENTITY aboveText.label                      "below my reply (above the quote)">
+<!ENTITY includeSigOnReply.label              "Include signature for replies">
+<!ENTITY includeSigOnReply.accesskey          "s">
+<!ENTITY includeSigOnForward.label            "Include signature for forwards">
+<!ENTITY includeSigOnForward.accesskey        "w">