diff --git a/controller/Notebooks.py b/controller/Notebooks.py
index 4e938bb..867f99f 100644
--- a/controller/Notebooks.py
+++ b/controller/Notebooks.py
@@ -9,6 +9,7 @@ from Expire import strongly_expire
 from Html_nuker import Html_nuker
 from model.Notebook import Notebook
 from model.Note import Note
+from model.Invite import Invite
 from model.User import User
 from view.Main_page import Main_page
 from view.Json import Json
@@ -152,12 +153,14 @@ class Notebooks( object ):
 
     startup_notes = self.__database.select_many( Note, notebook.sql_load_startup_notes() )
     total_notes_count = self.__database.select_one( int, notebook.sql_count_notes() )
+    invites = self.__database.select_many( Invite, Invite.sql_load_notebook_invites( notebook_id ) )
 
     return dict(
       notebook = notebook,
       startup_notes = startup_notes,
       total_notes_count = total_notes_count,
       notes = note and [ note ] or [],
+      invites = invites or [],
     )
 
   @expose( view = Json )
diff --git a/controller/Root.py b/controller/Root.py
index 3c90a12..7572a2d 100644
--- a/controller/Root.py
+++ b/controller/Root.py
@@ -240,9 +240,9 @@ class Root( object ):
     from email import Message
     
     message = Message.Message()
-    message[ u"from" ] = support_email
-    message[ u"to" ] = support_email
-    message[ u"subject" ] = u"Luminotes traceback"
+    message[ u"From" ] = support_email
+    message[ u"To" ] = support_email
+    message[ u"Subject" ] = u"Luminotes traceback"
     message.set_payload(
       u"requested URL: %s\n" % cherrypy.request.browser_url +
       u"user id: %s\n" % cherrypy.session.get( "user_id" ) +
@@ -253,7 +253,7 @@ class Root( object ):
     # send the message out through localhost's smtp server
     server = smtplib.SMTP()
     server.connect()
-    server.sendmail( message[ u"from" ], [ support_email ], message.as_string() )
+    server.sendmail( message[ u"From" ], [ support_email ], message.as_string() )
     server.quit()
 
     return True
diff --git a/controller/Users.py b/controller/Users.py
index fee5239..79ca044 100644
--- a/controller/Users.py
+++ b/controller/Users.py
@@ -578,6 +578,7 @@ class Users( object ):
       contents = unicode( Redeem_reset_note( password_reset_id, matching_users ) ),
       notebook_id = main_notebook.object_id,
     ) ]
+    result[ "invites" ] = []
 
     return result
 
diff --git a/controller/test/Test_controller.py b/controller/test/Test_controller.py
index b34946e..37cadaa 100644
--- a/controller/test/Test_controller.py
+++ b/controller/test/Test_controller.py
@@ -230,6 +230,20 @@ class Test_controller( object ):
     Invite.sql_load_similar = lambda self: \
       lambda database: sql_load_similar( self, database )
 
+    def sql_load_notebook_invites( notebook_id, database ):
+      invites = []
+
+      for ( object_id, obj_list ) in database.objects.items():
+        obj = obj_list[ -1 ]
+        if isinstance( obj, Invite ) and obj.notebook_id == notebook_id and \
+           obj.email_address not in [ i.email_address for i in invites ]:
+          invites.append( obj )
+
+      return invites
+
+    Invite.sql_load_notebook_invites = staticmethod( lambda notebook_id:
+      lambda database: sql_load_notebook_invites( notebook_id, database ) )
+
   def setUp( self ):
     from controller.Root import Root
     cherrypy.lowercase_api = True
diff --git a/controller/test/Test_notebooks.py b/controller/test/Test_notebooks.py
index 69332eb..c681fd4 100644
--- a/controller/test/Test_notebooks.py
+++ b/controller/test/Test_notebooks.py
@@ -6,6 +6,7 @@ from Test_controller import Test_controller
 from model.Notebook import Notebook
 from model.Note import Note
 from model.User import User
+from model.Invite import Invite
 from controller.Notebooks import Access_error
 
 
@@ -21,6 +22,7 @@ class Test_notebooks( Test_controller ):
     self.password = u"trustno1"
     self.email_address = u"outthere@example.com"
     self.user = None
+    self.invite = None
     self.anonymous = None
     self.session_id = None
 
@@ -55,6 +57,12 @@ class Test_notebooks( Test_controller ):
     self.database.save( self.anonymous, commit = False )
     self.database.execute( self.user.sql_save_notebook( self.anon_notebook.object_id, read_write = False, owner = False ) )
 
+    self.invite = Invite.create(
+      self.database.next_id( Invite ), self.user.object_id, self.notebook.object_id,
+      u"skinner@example.com", read_write = True, owner = False,
+    )
+    self.database.save( self.invite, commit = False )
+
   def test_default_without_login( self ):
     result = self.http_get(
       "/notebooks/%s" % self.notebook.object_id,
@@ -84,6 +92,11 @@ class Test_notebooks( Test_controller ):
     assert result.get( u"parent_id" ) == None
     assert result.get( u"note_read_write" ) in ( None, True )
 
+    invites = result[ "invites" ]
+    assert len( invites ) == 1
+    invite = invites[ 0 ]
+    assert invite.object_id == self.invite.object_id
+
     user = self.database.load( User, self.user.object_id )
     assert user.storage_bytes == 0
 
@@ -110,6 +123,11 @@ class Test_notebooks( Test_controller ):
     assert result.get( u"parent_id" ) == None
     assert result.get( u"note_read_write" ) in ( None, True )
 
+    invites = result[ "invites" ]
+    assert len( invites ) == 1
+    invite = invites[ 0 ]
+    assert invite.object_id == self.invite.object_id
+
     user = self.database.load( User, self.user.object_id )
     assert user.storage_bytes == 0
 
@@ -141,6 +159,11 @@ class Test_notebooks( Test_controller ):
     assert result.get( u"parent_id" ) == None
     assert result.get( u"note_read_write" ) == False
 
+    invites = result[ "invites" ]
+    assert len( invites ) == 1
+    invite = invites[ 0 ]
+    assert invite.object_id == self.invite.object_id
+
     user = self.database.load( User, self.user.object_id )
     assert user.storage_bytes == 0
 
@@ -165,6 +188,11 @@ class Test_notebooks( Test_controller ):
     assert result.get( u"parent_id" ) == parent_id
     assert result.get( u"note_read_write" ) in ( None, True )
 
+    invites = result[ "invites" ]
+    assert len( invites ) == 1
+    invite = invites[ 0 ]
+    assert invite.object_id == self.invite.object_id
+
     user = self.database.load( User, self.user.object_id )
     assert user.storage_bytes == 0
 
@@ -179,6 +207,11 @@ class Test_notebooks( Test_controller ):
     assert result[ "total_notes_count" ] == 2
     assert result[ "notes" ] == []
 
+    invites = result[ "invites" ]
+    assert len( invites ) == 1
+    invite = invites[ 0 ]
+    assert invite.object_id == self.invite.object_id
+
     assert notebook.object_id == self.notebook.object_id
     assert notebook.read_write == True
     assert notebook.owner == True
@@ -198,6 +231,11 @@ class Test_notebooks( Test_controller ):
     startup_notes = result[ "startup_notes" ]
     assert result[ "total_notes_count" ] == 2
 
+    invites = result[ "invites" ]
+    assert len( invites ) == 1
+    invite = invites[ 0 ]
+    assert invite.object_id == self.invite.object_id
+
     assert notebook.object_id == self.notebook.object_id
     assert notebook.read_write == True
     assert notebook.owner == True
@@ -226,6 +264,11 @@ class Test_notebooks( Test_controller ):
     startup_notes = result[ "startup_notes" ]
     assert result[ "total_notes_count" ] == 2
 
+    invites = result[ "invites" ]
+    assert len( invites ) == 1
+    invite = invites[ 0 ]
+    assert invite.object_id == self.invite.object_id
+
     assert notebook.object_id == self.notebook.object_id
     assert notebook.read_write == True
     assert notebook.owner == True
@@ -242,6 +285,71 @@ class Test_notebooks( Test_controller ):
     user = self.database.load( User, self.user.object_id )
     assert user.storage_bytes == 0
 
+  def test_contents_with_different_invites( self ):
+    # create an invite with a different email address from the previous
+    invite = Invite.create(
+      self.database.next_id( Invite ), self.user.object_id, self.notebook.object_id,
+      u"smoking@example.com", read_write = True, owner = False,
+    )
+    self.database.save( invite )
+
+    result = cherrypy.root.notebooks.contents(
+      notebook_id = self.notebook.object_id,
+      user_id = self.user.object_id,
+    )
+
+    notebook = result[ "notebook" ]
+    startup_notes = result[ "startup_notes" ]
+    assert result[ "total_notes_count" ] == 2
+    assert result[ "notes" ] == []
+
+    invites = result[ "invites" ]
+    assert len( invites ) == 2
+    invite = invites[ 0 ]
+    assert invite.object_id == invite.object_id
+    invite = invites[ 1 ]
+    assert invite.object_id == self.invite.object_id
+
+    assert notebook.object_id == self.notebook.object_id
+    assert notebook.read_write == True
+    assert notebook.owner == True
+    assert len( startup_notes ) == 1
+    assert startup_notes[ 0 ].object_id == self.note.object_id
+    user = self.database.load( User, self.user.object_id )
+    assert user.storage_bytes == 0
+
+  def test_contents_with_duplicate_invites( self ):
+    # create an invite with the same email address as the previous invite
+    invite = Invite.create(
+      self.database.next_id( Invite ), self.user.object_id, self.notebook.object_id,
+      u"skinner@example.com", read_write = True, owner = False,
+    )
+    self.database.save( invite )
+
+    result = cherrypy.root.notebooks.contents(
+      notebook_id = self.notebook.object_id,
+      user_id = self.user.object_id,
+    )
+
+    notebook = result[ "notebook" ]
+    startup_notes = result[ "startup_notes" ]
+    assert result[ "total_notes_count" ] == 2
+    assert result[ "notes" ] == []
+
+    # the two invites should be collapsed down into one
+    invites = result[ "invites" ]
+    assert len( invites ) == 1
+    invite = invites[ 0 ]
+    assert invite.object_id == invite.object_id
+
+    assert notebook.object_id == self.notebook.object_id
+    assert notebook.read_write == True
+    assert notebook.owner == True
+    assert len( startup_notes ) == 1
+    assert startup_notes[ 0 ].object_id == self.note.object_id
+    user = self.database.load( User, self.user.object_id )
+    assert user.storage_bytes == 0
+
   @raises( Access_error )
   def test_contents_without_user_id( self ):
     result = cherrypy.root.notebooks.contents(
@@ -272,6 +380,7 @@ class Test_notebooks( Test_controller ):
     startup_notes = result[ "startup_notes" ]
     assert result[ "notes" ] == []
     assert result[ "total_notes_count" ] == 0
+    assert result[ "invites" ] == []
 
     assert notebook.object_id == self.anon_notebook.object_id
     assert notebook.read_write == False
@@ -1762,6 +1871,7 @@ class Test_notebooks( Test_controller ):
     assert result[ "total_notes_count" ] == 0
     assert result[ "startup_notes" ] == []
     assert result[ "notes" ] == []
+    assert result[ "invites" ] == []
 
     assert notebook.object_id == new_notebook_id
     assert notebook.read_write == True
diff --git a/model/Invite.py b/model/Invite.py
index 02d8bce..20f8068 100644
--- a/model/Invite.py
+++ b/model/Invite.py
@@ -91,11 +91,31 @@ class Invite( Persistent ):
       quote( self.__redeemed_user_id ), quote( self.object_id ) )
 
   def sql_load_similar( self ):
-    # select unredeemed invitations with the same from_user_id, notebook_id, and email_address as this invitation
+    # select unredeemed invites with the same from_user_id, notebook_id, and email_address as this invite
     return "select id, revision, from_user_id, notebook_id, email_address, read_write, owner, redeemed_user_id from invite " + \
            "where from_user_id = %s and notebook_id = %s and email_address = %s and id != %s and redeemed_user_id is null;" % \
            ( quote( self.__from_user_id ), quote( self.__notebook_id ), quote( self.__email_address ), quote( self.object_id ) )
 
+  @staticmethod
+  def sql_load_notebook_invites( notebook_id ):
+    # select a list of invites to the given notebook. if there are multiple invites for a given
+    # email_address, arbitrarily pick one of them
+    return "select id, revision, from_user_id, notebook_id, email_address, read_write, owner, redeemed_user_id from invite " + \
+           "where id in ( select max( id ) from invite where notebook_id = %s group by email_address ) order by email_address;" % quote( notebook_id )
+
+  def to_dict( self ):
+    d = Persistent.to_dict( self )
+    d.update( dict(
+      from_user_id = self.__from_user_id,
+      notebook_id = self.__notebook_id,
+      email_address = self.__email_address,
+      read_write = self.__read_write,
+      owner = self.__owner,
+      redeemed_user_id = self.__redeemed_user_id,
+    ) )
+
+    return d
+
   def __set_read_write( self, read_write ):
     if read_write != self.__read_write:
       self.update_revision()
diff --git a/model/test/Test_invite.py b/model/test/Test_invite.py
index 0392c47..0847c73 100644
--- a/model/test/Test_invite.py
+++ b/model/test/Test_invite.py
@@ -1,3 +1,5 @@
+from pytz import utc
+from datetime import datetime, timedelta
 from model.User import User
 from model.Invite import Invite
 
@@ -10,6 +12,7 @@ class Test_invite( object ):
     self.email_address = u"bob@example.com"
     self.read_write = True
     self.owner = False
+    self.delta = timedelta( seconds = 1 )
 
     self.invite = Invite.create( self.object_id, self.from_user_id, self.notebook_id,
                                  self.email_address, self.read_write, self.owner )
@@ -39,3 +42,14 @@ class Test_invite( object ):
 
     assert self.invite.redeemed_user_id == redeemed_user_id
     assert self.invite.revision == current_revision
+
+  def test_to_dict( self ):
+    d = self.invite.to_dict()
+
+    assert d.get( "object_id" ) == self.object_id
+    assert datetime.now( tz = utc ) - d.get( "revision" ) < self.delta
+    assert d.get( "from_user_id" ) == self.from_user_id
+    assert d.get( "notebook_id" ) == self.notebook_id
+    assert d.get( "read_write" ) == self.read_write
+    assert d.get( "owner" ) == self.owner
+    assert d.get( "redeemed_user_id" ) == None
diff --git a/static/js/Wiki.js b/static/js/Wiki.js
index 8c5d292..aa0cd1a 100644
--- a/static/js/Wiki.js
+++ b/static/js/Wiki.js
@@ -12,6 +12,7 @@ function Wiki( invoker ) {
   this.invoker = invoker;
   this.rate_plan = evalJSON( getElement( "rate_plan" ).value );
   this.storage_usage_high = false;
+  this.invites = evalJSON( getElement( "invites" ).value );
 
   var total_notes_count_node = getElement( "total_notes_count" );
   if ( total_notes_count_node )
@@ -1296,6 +1297,41 @@ Wiki.prototype.share_notebook = function () {
     );
   }
 
+  if ( this.invites ) {
+    var collaborators = createDOM( "ul", { "id": "collaborators" } );
+    var viewers = createDOM( "ul", { "id": "viewers" } );
+    var owners = createDOM( "ul", { "id": "owners" } );
+
+    for ( var i in this.invites ) {
+      var invite = this.invites[ i ];
+      if ( invite.owner ) {
+          appendChildNodes( owners, createDOM( "li", {}, invite.email_address ) );
+      } else {
+        if ( invite.read_write )
+          appendChildNodes( collaborators, createDOM( "li", {}, invite.email_address ) );
+        else
+          appendChildNodes( viewers, createDOM( "li", {}, invite.email_address ) );
+      }
+    }
+
+    var invite_area = createDOM( "p", { "id": "invite_area" } );
+
+    if ( collaborators.childNodes.length > 0 ) {
+      appendChildNodes( invite_area, createDOM( "h3", {}, "collaborators" ) );
+      appendChildNodes( invite_area, collaborators );
+    }
+    if ( viewers.childNodes.length > 0 ) {
+      appendChildNodes( invite_area, createDOM( "h3", {}, "viewers" ) );
+      appendChildNodes( invite_area, viewers );
+    }
+    if ( owners.childNodes.length > 0 ) {
+      appendChildNodes( invite_area, createDOM( "h3", {}, "owners" ) );
+      appendChildNodes( invite_area, owners );
+    }
+  } else {
+    var invite_area = createDOM( "p", {}, "There are no invites." );
+  }
+
   var div = createDOM( "div", {}, 
     createDOM( "form", { "id": "invite_form" },
       createDOM( "input", { "type": "hidden", "name": "notebook_id", "value": this.notebook_id } ),
@@ -1312,7 +1348,8 @@ Wiki.prototype.share_notebook = function () {
         createDOM( "input",
           { "type": "submit", "name": "invite_button", "id": "invite_button", "class": "button", "value": "send invites" }
         )
-      )
+      ),
+      invite_area
     )
   );
 
diff --git a/static/js/test/Test_wiki.html b/static/js/test/Test_wiki.html
index 2f6519c..4c2cafd 100644
--- a/static/js/test/Test_wiki.html
+++ b/static/js/test/Test_wiki.html
@@ -85,6 +85,7 @@ function test_Wiki() {
 <input type="hidden" name="note_read_write" id="note_read_write" value="" />
 <input type="hidden" name="rename" id="rename" value="false" />
 <input type="hidden" name="deleted_id" id="deleted_id" value="" />
+<input type="hidden" name="invited" id="invited" value="[]" />
 
 <div id="static_notes">
 </div>
diff --git a/view/Main_page.py b/view/Main_page.py
index 5a20396..559047b 100644
--- a/view/Main_page.py
+++ b/view/Main_page.py
@@ -29,6 +29,7 @@ class Main_page( Page ):
     conversion = None,
     rename = False,
     deleted_id = None,
+    invites = None,
   ):
     startup_note_ids = [ startup_note.object_id for startup_note in startup_notes ]
 
@@ -98,6 +99,7 @@ class Main_page( Page ):
       Input( type = u"hidden", name = u"note_read_write", id = u"note_read_write", value = json( note_read_write ) ),
       Input( type = u"hidden", name = u"rename", id = u"rename", value = json( rename ) ),
       Input( type = u"hidden", name = u"deleted_id", id = u"deleted_id", value = deleted_id ),
+      Input( type = u"hidden", name = u"invites", id = u"invites", value = json( invites ) ),
       Div(
         id = u"status_area",
       ),