diff --git a/indra/llui/llloadingindicator.h b/indra/llui/llloadingindicator.h
index 4c47cc267c..7c44478848 100644
--- a/indra/llui/llloadingindicator.h
+++ b/indra/llui/llloadingindicator.h
@@ -86,6 +86,8 @@ public:
 	 */
 	void start();
 
+	void reset() { mCurImageIdx = 0; }
+
 private:
 	LLLoadingIndicator(const Params&);
 	void initFromParams(const Params&);
diff --git a/indra/newview/lloutfitslist.cpp b/indra/newview/lloutfitslist.cpp
index 6435126fc0..10887aa53a 100644
--- a/indra/newview/lloutfitslist.cpp
+++ b/indra/newview/lloutfitslist.cpp
@@ -364,8 +364,8 @@ LLOutfitsList::~LLOutfitsList()
 	if (gInventory.containsObserver(mCategoriesObserver))
 	{
 		gInventory.removeObserver(mCategoriesObserver);
-		delete mCategoriesObserver;
 	}
+	delete mCategoriesObserver;
 }
 
 BOOL LLOutfitsList::postBuild()
diff --git a/indra/newview/llpanelmarketplaceinbox.cpp b/indra/newview/llpanelmarketplaceinbox.cpp
index b401087345..6cebc5dd5a 100644
--- a/indra/newview/llpanelmarketplaceinbox.cpp
+++ b/indra/newview/llpanelmarketplaceinbox.cpp
@@ -68,7 +68,17 @@ void LLPanelMarketplaceInbox::draw()
 
 	model->getDirectDescendentsOf(model->findCategoryUUIDForType(LLFolderType::FT_INBOX, false, false), cats, items);
 
-	S32 item_count = cats->size() + items->size();
+	S32 item_count = 0;
+	
+	if (cats)
+	{
+		item_count += cats->size();
+	}
+
+	if (items)
+	{
+		item_count += items->size();
+	}
 
 	if (item_count)
 	{
diff --git a/indra/newview/llpanelmarketplaceoutbox.cpp b/indra/newview/llpanelmarketplaceoutbox.cpp
index 0151276f99..822286783f 100644
--- a/indra/newview/llpanelmarketplaceoutbox.cpp
+++ b/indra/newview/llpanelmarketplaceoutbox.cpp
@@ -81,7 +81,7 @@ std::string gTimeDelayDebugFunc = "";
 
 void timeDelay(LLCoros::self& self, LLPanelMarketplaceOutbox* outboxPanel)
 {
-	waitForEventOn(self, "mainloop");
+	waitForEventOn(self, "mainloop");
 
 	LLTimer delayTimer;
 	delayTimer.reset();
@@ -89,7 +89,7 @@ void timeDelay(LLCoros::self& self, LLPanelMarketplaceOutbox* outboxPanel)
 
 	while (!delayTimer.hasExpired())
 	{
-		waitForEventOn(self, "mainloop");
+		waitForEventOn(self, "mainloop");
 	}
 
 	outboxPanel->onSyncComplete();
@@ -123,6 +123,7 @@ void LLPanelMarketplaceOutbox::updateSyncButtonStatus()
 		mSyncButton->setVisible(false);
 
 		mSyncIndicator->setVisible(true);
+		mSyncIndicator->reset();
 		mSyncIndicator->start();
 	}
 	else
diff --git a/indra/newview/llpanelwearing.cpp b/indra/newview/llpanelwearing.cpp
index 911a9e5dda..0645fd8a54 100644
--- a/indra/newview/llpanelwearing.cpp
+++ b/indra/newview/llpanelwearing.cpp
@@ -174,8 +174,8 @@ LLPanelWearing::~LLPanelWearing()
 	if (gInventory.containsObserver(mCategoriesObserver))
 	{
 		gInventory.removeObserver(mCategoriesObserver);
-		delete mCategoriesObserver;
 	}
+	delete mCategoriesObserver;
 }
 
 BOOL LLPanelWearing::postBuild()
diff --git a/indra/newview/llsidepanelinventory.cpp b/indra/newview/llsidepanelinventory.cpp
index 301322d24b..ae2ac4b5e5 100644
--- a/indra/newview/llsidepanelinventory.cpp
+++ b/indra/newview/llsidepanelinventory.cpp
@@ -31,32 +31,116 @@
 #include "llappearancemgr.h"
 #include "llavataractions.h"
 #include "llbutton.h"
+#include "lldate.h"
 #include "llfirstuse.h"
+#include "llfoldertype.h"
 #include "llinventorybridge.h"
 #include "llinventoryfunctions.h"
+#include "llinventorymodel.h"
+#include "llinventorymodelbackgroundfetch.h"
+#include "llinventoryobserver.h"
 #include "llinventorypanel.h"
+#include "lllayoutstack.h"
 #include "lloutfitobserver.h"
 #include "llpanelmaininventory.h"
+#include "llselectmgr.h"
 #include "llsidepaneliteminfo.h"
 #include "llsidepaneltaskinfo.h"
 #include "lltabcontainer.h"
-#include "llselectmgr.h"
 #include "llweb.h"
-#include "lllayoutstack.h"
 
 static LLRegisterPanelClassWrapper<LLSidepanelInventory> t_inventory("sidepanel_inventory");
 
-LLSidepanelInventory::LLSidepanelInventory()
-	:	LLPanel(),
-		mItemPanel(NULL),
-		mPanelMainInventory(NULL)
-{
+//
+// Constants
+//
 
+static const char * const INBOX_EXPAND_TIME_SETTING = "LastInventoryInboxExpand";
+
+static const char * const INBOX_BUTTON_NAME = "inbox_btn";
+static const char * const OUTBOX_BUTTON_NAME = "outbox_btn";
+
+static const char * const INBOX_LAYOUT_PANEL_NAME = "inbox_layout_panel";
+static const char * const OUTBOX_LAYOUT_PANEL_NAME = "outbox_layout_panel";
+static const char * const MAIN_INVENTORY_LAYOUT_PANEL = "main_inventory_layout_panel";
+
+static const char * const INVENTORY_LAYOUT_STACK_NAME = "inventory_layout_stack";
+
+//
+// Helpers
+//
+
+class LLInboxOutboxInventoryAddedObserver : public LLInventoryAddedObserver
+{
+public:
+	LLInboxOutboxInventoryAddedObserver(LLSidepanelInventory * sidepanelInventory)
+		: LLInventoryAddedObserver()
+		, mSidepanelInventory(sidepanelInventory)
+	{}
+
+protected:
+	virtual void done()
+	{
+		uuid_vec_t::const_iterator it = mAdded.begin();
+		uuid_vec_t::const_iterator it_end = mAdded.end();
+		
+		for(; it != it_end; ++it)
+		{
+			LLInventoryObject* item = gInventory.getObject(*it);
+
+			// NOTE: This doesn't actually work because folder creation does not trigger this observer
+			if (item && item->getType() == LLAssetType::AT_CATEGORY)
+			{
+				// Check for FolderType FT_INBOX or FT_OUTBOX and report back to mSidepanelInventory
+				LLInventoryCategory * item_cat = static_cast<LLInventoryCategory *>(item);
+				LLFolderType::EType folderType = item_cat->getPreferredType();
+
+				if (folderType == LLFolderType::FT_INBOX)
+				{
+					mSidepanelInventory->enableInbox(true);
+				}
+				else if (folderType == LLFolderType::FT_OUTBOX)
+				{
+					mSidepanelInventory->enableOutbox(true);
+				}
+			}
+		}
+
+		mAdded.clear();
+	}
+
+private:
+	LLSidepanelInventory * mSidepanelInventory;
+};
+
+//
+// Implementation
+//
+
+LLSidepanelInventory::LLSidepanelInventory()
+	: LLPanel()
+	, mItemPanel(NULL)
+	, mPanelMainInventory(NULL)
+	, mInventoryFetched(false)
+	, mCategoriesObserver(NULL)
+	, mInboxOutboxAddedObserver(NULL)
+{
 	//buildFromFile( "panel_inventory.xml"); // Called from LLRegisterPanelClass::defaultPanelClassBuilder()
 }
 
 LLSidepanelInventory::~LLSidepanelInventory()
 {
+	if (mInboxOutboxAddedObserver && gInventory.containsObserver(mInboxOutboxAddedObserver))
+	{
+		gInventory.removeObserver(mInboxOutboxAddedObserver);
+	}
+	delete mInboxOutboxAddedObserver;
+
+	if (mCategoriesObserver && gInventory.containsObserver(mCategoriesObserver))
+	{
+		gInventory.removeObserver(mCategoriesObserver);
+	}
+	delete mCategoriesObserver;
 }
 
 BOOL LLSidepanelInventory::postBuild()
@@ -122,32 +206,110 @@ BOOL LLSidepanelInventory::postBuild()
 
 	// Marketplace inbox/outbox setup
 	{
-		LLButton * inboxButton = getChild<LLButton>("inbox_btn");
-		LLButton * outboxButton = getChild<LLButton>("outbox_btn");
+		LLButton * inbox_button = getChild<LLButton>(INBOX_BUTTON_NAME);
+		LLButton * outbox_button = getChild<LLButton>(OUTBOX_BUTTON_NAME);
 
-		inboxButton->setCommitCallback(boost::bind(&LLSidepanelInventory::onToggleInboxBtn, this));
-		outboxButton->setCommitCallback(boost::bind(&LLSidepanelInventory::onToggleOutboxBtn, this));
+		LLLayoutStack* stack = getChild<LLLayoutStack>(INVENTORY_LAYOUT_STACK_NAME);
 
-		LLLayoutStack* stack = getChild<LLLayoutStack>("inventory_layout_stack");
+		LLLayoutPanel * inbox_panel = getChild<LLLayoutPanel>(INBOX_LAYOUT_PANEL_NAME);
+		LLLayoutPanel * outbox_panel = getChild<LLLayoutPanel>(OUTBOX_LAYOUT_PANEL_NAME);
 
-		stack->collapsePanel(getChild<LLLayoutPanel>("inbox_layout_panel"), true);
-		stack->collapsePanel(getChild<LLLayoutPanel>("outbox_layout_panel"), true);
+		stack->collapsePanel(inbox_panel, true);
+		stack->collapsePanel(outbox_panel, true);
 
-		inboxButton->setToggleState(false);
-		outboxButton->setToggleState(false);
+		inbox_button->setToggleState(false);
+		outbox_button->setToggleState(false);
+
+		inbox_button->setCommitCallback(boost::bind(&LLSidepanelInventory::onToggleInboxBtn, this));
+		outbox_button->setCommitCallback(boost::bind(&LLSidepanelInventory::onToggleOutboxBtn, this));
+	
+		// TODO: Hide inbox/outbox panels until we determine the status of the feature
+		//inbox_panel->setVisible(false);
+		//outbox_panel->setVisible(false);
+
+		// Track added items
+		mInboxOutboxAddedObserver = new LLInboxOutboxInventoryAddedObserver(this);
+		gInventory.addObserver(mInboxOutboxAddedObserver);
+
+		// Track inbox and outbox folder changes
+		const bool do_not_create_folder = false;
+		const bool do_not_find_in_library = false;
+
+		const LLUUID inbox_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_INBOX, do_not_create_folder, do_not_find_in_library);
+		const LLUUID outbox_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_OUTBOX, do_not_create_folder, do_not_find_in_library);
+
+		mCategoriesObserver = new LLInventoryCategoriesObserver();
+		gInventory.addObserver(mCategoriesObserver);
+
+		mCategoriesObserver->addCategory(inbox_id, boost::bind(&LLSidepanelInventory::onInboxChanged, this, inbox_id));
+		mCategoriesObserver->addCategory(outbox_id, boost::bind(&LLSidepanelInventory::onOutboxChanged, this, outbox_id));
 	}
 
 	return TRUE;
 }
 
+void LLSidepanelInventory::draw()
+{
+	if (!mInventoryFetched && LLInventoryModelBackgroundFetch::instance().isEverythingFetched())
+	{
+		mInventoryFetched = true;
+		
+		updateInboxOutboxPanels();
+	}
 
-void manageInboxOutboxPanels(LLLayoutStack * stack,
+	LLPanel::draw();
+}
+
+void LLSidepanelInventory::updateInboxOutboxPanels()
+{
+	// Iterate through gInventory looking for inbox and outbox
+	const bool do_not_create_folder = false;
+	const bool do_not_find_in_library = false;
+
+	const LLUUID inbox_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_INBOX, do_not_create_folder, do_not_find_in_library);
+	const LLUUID outbox_id = gInventory.findCategoryUUIDForType(LLFolderType::FT_OUTBOX, do_not_create_folder, do_not_find_in_library);
+
+	enableInbox(inbox_id.notNull());
+	enableOutbox(outbox_id.notNull());
+}
+
+void LLSidepanelInventory::enableInbox(bool enabled)
+{
+	getChild<LLLayoutPanel>(INBOX_LAYOUT_PANEL_NAME)->setVisible(enabled);
+}
+
+void LLSidepanelInventory::enableOutbox(bool enabled)
+{
+	getChild<LLLayoutPanel>(OUTBOX_LAYOUT_PANEL_NAME)->setVisible(enabled);
+}
+
+void LLSidepanelInventory::onInboxChanged(const LLUUID& inbox_id)
+{
+	// Perhaps use this to track inbox changes?
+}
+
+void LLSidepanelInventory::onOutboxChanged(const LLUUID& outbox_id)
+{
+	// Perhaps use this to track outbox changes?
+}
+
+bool manageInboxOutboxPanels(LLLayoutStack * stack,
 							 LLButton * pressedButton, LLLayoutPanel * pressedPanel,
 							 LLButton * otherButton, LLLayoutPanel * otherPanel)
 {
 	bool expand = pressedButton->getToggleState();
 	bool otherExpanded = otherButton->getToggleState();
 
+	//
+	// NOTE: Ideally we could have two panel sizes stored for a collapsed and expanded minimum size.
+	//       For now, leave this code disabled because it creates some bad artifacts when expanding
+	//       and collapsing the inbox/outbox.
+	//
+	//S32 smallMinSize = (expand ? pressedPanel->getMinDim() : otherPanel->getMinDim());
+	//S32 pressedMinSize = (expand ? 2 * smallMinSize : smallMinSize);
+	//otherPanel->setMinDim(smallMinSize);
+	//pressedPanel->setMinDim(pressedMinSize);
+
 	if (expand && otherExpanded)
 	{
 		// Reshape pressedPanel to the otherPanel's height so we preserve the marketplace panel size
@@ -159,33 +321,46 @@ void manageInboxOutboxPanels(LLLayoutStack * stack,
 
 	stack->collapsePanel(pressedPanel, !expand);
 
-	// Enable user_resize on main inventory panel when at least one marketplace box is expanded
-	stack->setPanelUserResize("main_inventory_layout_panel", expand);
+	// Enable user_resize on main inventory panel only when a marketplace box is expanded
+	stack->setPanelUserResize(MAIN_INVENTORY_LAYOUT_PANEL, expand);
+
+	return expand;
 }
 
 void LLSidepanelInventory::onToggleInboxBtn()
 {
-	LLLayoutStack* stack = getChild<LLLayoutStack>("inventory_layout_stack");
-	LLButton* pressedButton = getChild<LLButton>("inbox_btn");
-	LLLayoutPanel* pressedPanel = getChild<LLLayoutPanel>("inbox_layout_panel");
-	LLButton* otherButton = getChild<LLButton>("outbox_btn");
-	LLLayoutPanel* otherPanel = getChild<LLLayoutPanel>("outbox_layout_panel");
+	LLLayoutStack* stack = getChild<LLLayoutStack>(INVENTORY_LAYOUT_STACK_NAME);
+	LLButton* pressedButton = getChild<LLButton>(INBOX_BUTTON_NAME);
+	LLLayoutPanel* pressedPanel = getChild<LLLayoutPanel>(INBOX_LAYOUT_PANEL_NAME);
+	LLButton* otherButton = getChild<LLButton>(OUTBOX_BUTTON_NAME);
+	LLLayoutPanel* otherPanel = getChild<LLLayoutPanel>(OUTBOX_LAYOUT_PANEL_NAME);
 
-	manageInboxOutboxPanels(stack, pressedButton, pressedPanel, otherButton, otherPanel);
+	bool inboxExpanded = manageInboxOutboxPanels(stack, pressedButton, pressedPanel, otherButton, otherPanel);
+
+	if (inboxExpanded)
+	{
+		// Save current time as a setting for future new-ness tests
+		gSavedSettings.setString(INBOX_EXPAND_TIME_SETTING, LLDate::now().asString());
+
+		// TODO: Hide inbox badge
+	}
+	else
+	{
+		// TODO: Show inbox badge
+	}
 }
 
 void LLSidepanelInventory::onToggleOutboxBtn()
 {
-	LLLayoutStack* stack = getChild<LLLayoutStack>("inventory_layout_stack");
-	LLButton* pressedButton = getChild<LLButton>("outbox_btn");
-	LLLayoutPanel* pressedPanel = getChild<LLLayoutPanel>("outbox_layout_panel");
-	LLButton* otherButton = getChild<LLButton>("inbox_btn");
-	LLLayoutPanel* otherPanel = getChild<LLLayoutPanel>("inbox_layout_panel");
+	LLLayoutStack* stack = getChild<LLLayoutStack>(INVENTORY_LAYOUT_STACK_NAME);
+	LLButton* pressedButton = getChild<LLButton>(OUTBOX_BUTTON_NAME);
+	LLLayoutPanel* pressedPanel = getChild<LLLayoutPanel>(OUTBOX_LAYOUT_PANEL_NAME);
+	LLButton* otherButton = getChild<LLButton>(INBOX_BUTTON_NAME);
+	LLLayoutPanel* otherPanel = getChild<LLLayoutPanel>(INBOX_LAYOUT_PANEL_NAME);
 
 	manageInboxOutboxPanels(stack, pressedButton, pressedPanel, otherButton, otherPanel);
 }
 
-
 void LLSidepanelInventory::onOpen(const LLSD& key)
 {
 	LLFirstUse::newInventory(false);
diff --git a/indra/newview/llsidepanelinventory.h b/indra/newview/llsidepanelinventory.h
index a4e8d0e8e8..8047e11566 100644
--- a/indra/newview/llsidepanelinventory.h
+++ b/indra/newview/llsidepanelinventory.h
@@ -30,6 +30,8 @@
 #include "llpanel.h"
 
 class LLFolderViewItem;
+class LLInboxOutboxInventoryAddedObserver;
+class LLInventoryCategoriesObserver;
 class LLInventoryItem;
 class LLInventoryPanel;
 class LLPanelMainInventory;
@@ -59,6 +61,12 @@ public:
 	void onToggleInboxBtn();
 	void onToggleOutboxBtn();
 
+	void updateInboxOutboxPanels();
+	void enableInbox(bool enabled);
+	void enableOutbox(bool enabled);
+
+	virtual void draw();
+
 protected:
 	// Tracks highlighted (selected) item in inventory panel.
 	LLInventoryItem *getSelectedItem();
@@ -70,6 +78,9 @@ protected:
 
 	bool canWearSelected(); // check whether selected items can be worn
 
+	void onInboxChanged(const LLUUID& inbox_id);
+	void onOutboxChanged(const LLUUID& outbox_id);
+
 	//
 	// UI Elements
 	//
@@ -88,6 +99,7 @@ protected:
 	void 						onTeleportButtonClicked();
 	void 						onOverflowButtonClicked();
 	void 						onBackButtonClicked();
+
 private:
 	LLButton*					mInfoBtn;
 	LLButton*					mShareBtn;
@@ -97,6 +109,10 @@ private:
 	LLButton*					mOverflowBtn;
 	LLButton*					mShopBtn;
 
+	bool						mInventoryFetched;
+
+	LLInventoryCategoriesObserver* 			mCategoriesObserver;
+	LLInboxOutboxInventoryAddedObserver*	mInboxOutboxAddedObserver;
 };
 
 #endif //LL_LLSIDEPANELINVENTORY_H
diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Disabled.png b/indra/newview/skins/default/textures/icons/OutboxPush_Disabled.png
new file mode 100644
index 0000000000..be58114aa1
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diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Off.png b/indra/newview/skins/default/textures/icons/OutboxPush_Off.png
new file mode 100644
index 0000000000..e6b9480ab1
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diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_On.png b/indra/newview/skins/default/textures/icons/OutboxPush_On.png
new file mode 100644
index 0000000000..ffda2e92d4
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diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_On_Over.png b/indra/newview/skins/default/textures/icons/OutboxPush_On_Over.png
new file mode 100644
index 0000000000..6b5911014f
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diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_On_Selected.png b/indra/newview/skins/default/textures/icons/OutboxPush_On_Selected.png
new file mode 100644
index 0000000000..0e60b417b0
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diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Over.png b/indra/newview/skins/default/textures/icons/OutboxPush_Over.png
new file mode 100644
index 0000000000..9c26b92e73
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diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Press.png b/indra/newview/skins/default/textures/icons/OutboxPush_Press.png
new file mode 100644
index 0000000000..3b5d462975
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diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Progress_1.png b/indra/newview/skins/default/textures/icons/OutboxPush_Progress_1.png
new file mode 100644
index 0000000000..f85be047b0
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diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Progress_2.png b/indra/newview/skins/default/textures/icons/OutboxPush_Progress_2.png
new file mode 100644
index 0000000000..cd4e482216
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diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Progress_3.png b/indra/newview/skins/default/textures/icons/OutboxPush_Progress_3.png
new file mode 100644
index 0000000000..d212a871ce
Binary files /dev/null and b/indra/newview/skins/default/textures/icons/OutboxPush_Progress_3.png differ
diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Progress_4.png b/indra/newview/skins/default/textures/icons/OutboxPush_Progress_4.png
new file mode 100644
index 0000000000..e5b6023e36
Binary files /dev/null and b/indra/newview/skins/default/textures/icons/OutboxPush_Progress_4.png differ
diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Progress_5.png b/indra/newview/skins/default/textures/icons/OutboxPush_Progress_5.png
new file mode 100644
index 0000000000..e1911a092f
Binary files /dev/null and b/indra/newview/skins/default/textures/icons/OutboxPush_Progress_5.png differ
diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Progress_6.png b/indra/newview/skins/default/textures/icons/OutboxPush_Progress_6.png
new file mode 100644
index 0000000000..9e59f7843a
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diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Selected.png b/indra/newview/skins/default/textures/icons/OutboxPush_Selected.png
new file mode 100644
index 0000000000..51e8bff646
Binary files /dev/null and b/indra/newview/skins/default/textures/icons/OutboxPush_Selected.png differ
diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Selected_Disabled.png b/indra/newview/skins/default/textures/icons/OutboxPush_Selected_Disabled.png
new file mode 100644
index 0000000000..300e2e69e1
Binary files /dev/null and b/indra/newview/skins/default/textures/icons/OutboxPush_Selected_Disabled.png differ
diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Selected_Over.png b/indra/newview/skins/default/textures/icons/OutboxPush_Selected_Over.png
new file mode 100644
index 0000000000..32fb236381
Binary files /dev/null and b/indra/newview/skins/default/textures/icons/OutboxPush_Selected_Over.png differ
diff --git a/indra/newview/skins/default/textures/icons/OutboxPush_Selected_Press.png b/indra/newview/skins/default/textures/icons/OutboxPush_Selected_Press.png
new file mode 100644
index 0000000000..827f343b1e
Binary files /dev/null and b/indra/newview/skins/default/textures/icons/OutboxPush_Selected_Press.png differ
diff --git a/indra/newview/skins/default/textures/textures.xml b/indra/newview/skins/default/textures/textures.xml
index a6e71cc38e..7888674b04 100644
--- a/indra/newview/skins/default/textures/textures.xml
+++ b/indra/newview/skins/default/textures/textures.xml
@@ -332,6 +332,23 @@ with the same filename but different name
   <texture name="OptionsMenu_Off" file_name="icons/OptionsMenu_Off.png" preload="false" />
   <texture name="OptionsMenu_Press" file_name="icons/OptionsMenu_Press.png" preload="false" />
 
+  <texture name="OutboxPush_Disabled" file_name="icons/OutboxPush_Disabled.png" preload="true" />
+  <texture name="OutboxPush_Off" file_name="icons/OutboxPush_Off.png" preload="true" />
+  <texture name="OutboxPush_On" file_name="icons/OutboxPush_On.png" preload="true" />
+  <texture name="OutboxPush_On_Over" file_name="icons/OutboxPush_On_Over.png" preload="true" />
+  <texture name="OutboxPush_Over" file_name="icons/OutboxPush_Over.png" preload="true" />
+  <texture name="OutboxPush_Press" file_name="icons/OutboxPush_Press.png" preload="true" />
+  <texture name="OutboxPush_Progress_1" file_name="icons/OutboxPush_Progress_1.png" preload="true" />
+  <texture name="OutboxPush_Progress_2" file_name="icons/OutboxPush_Progress_2.png" preload="true" />
+  <texture name="OutboxPush_Progress_3" file_name="icons/OutboxPush_Progress_3.png" preload="true" />
+  <texture name="OutboxPush_Progress_4" file_name="icons/OutboxPush_Progress_4.png" preload="true" />
+  <texture name="OutboxPush_Progress_5" file_name="icons/OutboxPush_Progress_5.png" preload="true" />
+  <texture name="OutboxPush_Progress_6" file_name="icons/OutboxPush_Progress_6.png" preload="true" />
+  <texture name="OutboxPush_Selected" file_name="icons/OutboxPush_Selected.png" preload="true" />
+  <texture name="OutboxPush_Selected_Disabled" file_name="icons/OutboxPush_Selected_Disabled.png" preload="true" />
+  <texture name="OutboxPush_Selected_Over" file_name="icons/OutboxPush_Selected_Over.png" preload="true" />
+  <texture name="OutboxPush_Selected_Press" file_name="icons/OutboxPush_Selected_Press.png" preload="true" />
+
   <texture name="PanOrbit_Off" file_name="bottomtray/PanOrbit_Off.png" preload="false" />
 
   <texture name="Parcel_Exp_Color" file_name="icons/Parcel_Exp_Color.png" preload="false" />
@@ -488,7 +505,7 @@ with the same filename but different name
   <texture name="Sync_Progress_5" file_name="icons/Sync_Progress_5.png" preload="true" />
   <texture name="Sync_Progress_6" file_name="icons/Sync_Progress_6.png" preload="true" />
 
-    <texture name="TabIcon_Appearance_Off" file_name="taskpanel/TabIcon_Appearance_Off.png" preload="false" />
+  <texture name="TabIcon_Appearance_Off" file_name="taskpanel/TabIcon_Appearance_Off.png" preload="false" />
   <texture name="TabIcon_Appearance_Selected" file_name="taskpanel/TabIcon_Appearance_Selected.png" preload="false" />
   <texture name="TabIcon_Close_Off" file_name="taskpanel/TabIcon_Close_Off.png" preload="false" />
   <texture name="TabIcon_Home_Off" file_name="taskpanel/TabIcon_Home_Off.png" preload="false" />
diff --git a/indra/newview/skins/default/xui/en/sidepanel_inventory.xml b/indra/newview/skins/default/xui/en/sidepanel_inventory.xml
index 91de3047e6..c945f27ac6 100644
--- a/indra/newview/skins/default/xui/en/sidepanel_inventory.xml
+++ b/indra/newview/skins/default/xui/en/sidepanel_inventory.xml
@@ -89,21 +89,21 @@
                              width="308"
                              top="35"
                              bg_opaque_color="InventoryBackgroundColor"
-  background_visible="true"
-  background_opaque="true"
+                             background_visible="true"
+                             background_opaque="true"
                            >
                              <text
                                  type="string"
-		length="1"
-		follows="top|left|right"
-		font="SansSerifSmall"
+                                 length="1"
+                                 follows="top|left|right"
+                                 font="SansSerifSmall"
                                  use_ellipses="true"
                                  name="move_items_text"
-                               top="10"
-                               left="4"
-                               height="20"
-                               width="304"
-                               >Move items to your inventory to manage and use them.</text>
+                                 top="10"
+                                 left="4"
+                                 height="20"
+                                 width="304"
+                                 >Move items to your inventory to manage and use them.</text>
                              <inventory_panel
                                 bg_opaque_color="DkGray2"
                                 bg_alpha_color="DkGray2"
@@ -125,14 +125,14 @@
                  </panel>
              </layout_panel>
              <layout_panel
-  width="330"
-  auto_resize="true"
+                width="330"
+                auto_resize="true"
                 user_resize="false"
-   follows="bottom|left|right"
-  name="outbox_layout_panel"
-                 min_dim="35"
-                 max_dim="125"
-  height="35">
+                follows="bottom|left|right"
+                name="outbox_layout_panel"
+                min_dim="35"
+                max_dim="125"
+                height="35">
                  <panel
                       follows="all"
                       layout="topleft"
@@ -144,52 +144,57 @@
                       height="125"
                       width="310">
                      <button
-                         label="MARKETPLACE OUTBOX"
-                         is_toggle="true"
-                         name="outbox_btn"
-                      follows="top|left|right"
-                         image_unselected="MarketplaceBtn_Off"
-                            image_selected="MarketplaceBtn_Selected"
-                         height="35"
-                         tab_stop="false"
-                         width="308"
-                         halign="left"
-                         pad_left="35"
-                         top="0"
-                        left="0" />
-                    <button
-                        image_disabled="Sync_Disabled"
-                        image_disabled_selected="Sync_Disabled"
-                        image_unselected="Sync_Enabled"
-                        image_selected="Sync_Enabled"
-                        label=""
-                        is_toggle="false"
-                        name="outbox_sync_btn"
-                        follows="top|right"
-                        height="16"
+                        label="MARKETPLACE OUTBOX"
+                        is_toggle="true"
+                        name="outbox_btn"
+                        follows="top|left|right"
+                        image_unselected="MarketplaceBtn_Off"
+                        image_selected="MarketplaceBtn_Selected"
+                        height="35"
                         tab_stop="false"
-                        width="16"
-                        halign="center"
-                        top="10"
-                        left="-40"
-                        enabled="false" />
+                        width="308"
+                        halign="left"
+                        pad_left="35"
+                        top="0"
+                        left="0" />
+                     <button
+                         image_unselected="OutboxPush_Off"
+                         image_selected="OutboxPush_Selected"
+                         image_hover_selected="OutboxPush_Selected_Over"
+                         image_hover_unselected="OutboxPush_Over"
+                         image_disabled_selected="OutboxPush_Selected_Disabled"
+                         image_disabled="OutboxPush_Disabled"
+                         image_pressed="OutboxPush_Press"
+                         image_pressed_selected="OutboxPush_Selected_Press"
+                         label=""
+                         tool_tip="Push to my Marketplace Storefront"
+                         is_toggle="false"
+                         name="outbox_sync_btn"
+                         follows="top|right"
+                         tab_stop="false"
+                         halign="center"
+                         top="6"
+                         left="-50"
+                         height="23"
+                         width="32"
+                         enabled="false" />
                      <loading_indicator
                         follows="top|right"
                         name="outbox_sync_indicator"
-                        top="10"
-                        left="-40"
-                        height="16"
-                        width="16"
-                        images_per_sec="1.0"
+                        top="6"
+                        left="-50"
+                        height="23"
+                        width="32"
+                        images_per_sec="1.15"
                         tab_stop="false"
                         visible="false">
                          <images>
-                             <image name="Sync_Progress_1"/>
-                             <image name="Sync_Progress_2"/>
-                             <image name="Sync_Progress_3"/>
-                             <image name="Sync_Progress_4"/>
-                             <image name="Sync_Progress_5"/>
-                             <image name="Sync_Progress_6"/>
+                             <image name="OutboxPush_Progress_1"/>
+                             <image name="OutboxPush_Progress_2"/>
+                             <image name="OutboxPush_Progress_3"/>
+                             <image name="OutboxPush_Progress_4"/>
+                             <image name="OutboxPush_Progress_5"/>
+                             <image name="OutboxPush_Progress_6"/>
                          </images>
                      </loading_indicator>
                      <panel