diff --git a/app/assets/javascripts/discourse/controllers/user-invited.js.es6 b/app/assets/javascripts/discourse/controllers/user-invited.js.es6
index 6e63475a3..ea1a43da7 100644
--- a/app/assets/javascripts/discourse/controllers/user-invited.js.es6
+++ b/app/assets/javascripts/discourse/controllers/user-invited.js.es6
@@ -14,6 +14,8 @@ export default Ember.ObjectController.extend({
     this.set('searchTerm', '');
   },
 
+  uploadText: function() { return I18n.t("user.invited.bulk_invite.text"); }.property(),
+
   /**
     Observe the search term box with a debouncer and change the results.
 
@@ -42,6 +44,15 @@ export default Ember.ObjectController.extend({
     return Discourse.User.currentProp('can_invite_to_forum');
   }.property(),
 
+  /**
+    Can the currently logged in user bulk invite users to the site (only Admin is allowed to perform this operation)
+
+    @property canBulkInvite
+  **/
+  canBulkInvite: function() {
+    return Discourse.User.currentProp('admin');
+  }.property(),
+
   /**
     Should the search filter input box be displayed?
 
@@ -75,5 +86,3 @@ export default Ember.ObjectController.extend({
   }
 
 });
-
-
diff --git a/app/assets/javascripts/discourse/routes/user_invited_route.js b/app/assets/javascripts/discourse/routes/user_invited_route.js
index 3856e383a..797f4e5a0 100644
--- a/app/assets/javascripts/discourse/routes/user_invited_route.js
+++ b/app/assets/javascripts/discourse/routes/user_invited_route.js
@@ -34,6 +34,14 @@ Discourse.UserInvitedRoute = Discourse.Route.extend({
     showInvite: function() {
       Discourse.Route.showModal(this, 'invite', Discourse.User.current());
       this.controllerFor('invite').reset();
+    },
+
+    uploadSuccess: function(filename) {
+      bootbox.alert(I18n.t("user.invited.bulk_invite.success", { filename: filename }));
+    },
+
+    uploadError: function(filename, message) {
+      bootbox.alert(I18n.t("user.invited.bulk_invite.error", { filename: filename, message: message }));
     }
   }
 
diff --git a/app/assets/javascripts/discourse/templates/user/invited.js.handlebars b/app/assets/javascripts/discourse/templates/user/invited.js.handlebars
index 9d93cc5c4..ce811108e 100644
--- a/app/assets/javascripts/discourse/templates/user/invited.js.handlebars
+++ b/app/assets/javascripts/discourse/templates/user/invited.js.handlebars
@@ -2,9 +2,14 @@
 
   <h2>{{i18n user.invited.title}}</h2>
 
-  {{#if canInviteToForum}}
-    <button {{action showInvite}} class='btn right'>{{i18n user.invited.create}}</button>
-  {{/if}}
+  <div class="pull-right">
+    {{#if canInviteToForum}}
+      <button {{action showInvite}} class='btn'>{{i18n user.invited.create}}</button>
+    {{/if}}
+    {{#if canBulkInvite}}
+      {{resumable-upload target="/invites/upload" success="uploadSuccess" error="uploadError" uploadText=uploadText}}
+    {{/if}}
+  </div>
 
   {{#if showSearch}}
   <form>
diff --git a/app/controllers/admin/backups_controller.rb b/app/controllers/admin/backups_controller.rb
index 94881c12b..453cbf2ba 100644
--- a/app/controllers/admin/backups_controller.rb
+++ b/app/controllers/admin/backups_controller.rb
@@ -2,7 +2,7 @@ require_dependency "backup_restore"
 
 class Admin::BackupsController < Admin::AdminController
 
-  skip_before_filter :check_xhr, only: [:index, :show, :logs, :check_chunk, :upload_chunk]
+  skip_before_filter :check_xhr, only: [:index, :show, :logs, :check_backup_chunk, :upload_backup_chunk]
 
   def index
     respond_to do |format|
@@ -87,7 +87,7 @@ class Admin::BackupsController < Admin::AdminController
     render nothing: true
   end
 
-  def check_chunk
+  def check_backup_chunk
     identifier         = params.fetch(:resumableIdentifier)
     filename           = params.fetch(:resumableFilename)
     chunk_number       = params.fetch(:resumableChunkNumber)
@@ -95,15 +95,13 @@ class Admin::BackupsController < Admin::AdminController
 
     # path to chunk file
     chunk = Backup.chunk_path(identifier, filename, chunk_number)
-    # check whether the chunk has already been uploaded
-    has_chunk_been_uploaded = File.exists?(chunk) && File.size(chunk) == current_chunk_size
-    # 200 = exists, 404 = not uploaded yet
-    status = has_chunk_been_uploaded ? 200 : 404
+    # check chunk upload status
+    status = HandleChunkUpload.check_chunk(chunk, current_chunk_size: current_chunk_size)
 
     render nothing: true, status: status
   end
 
-  def upload_chunk
+  def upload_backup_chunk
     filename   = params.fetch(:resumableFilename)
     total_size = params.fetch(:resumableTotalSize).to_i
 
@@ -118,15 +116,10 @@ class Admin::BackupsController < Admin::AdminController
 
     # path to chunk file
     chunk = Backup.chunk_path(identifier, filename, chunk_number)
-    dir = File.dirname(chunk)
-
-    # ensure directory exists
-    FileUtils.mkdir_p(dir) unless Dir.exists?(dir)
-    # save chunk to the directory
-    File.open(chunk, "wb") { |f| f.write(file.tempfile.read) }
+    # upload chunk
+    HandleChunkUpload.upload_chunk(chunk, file: file)
 
     uploaded_file_size = chunk_number * chunk_size
-
     # when all chunks are uploaded
     if uploaded_file_size + current_chunk_size >= total_size
       # merge all the chunks in a background thread
diff --git a/app/controllers/invites_controller.rb b/app/controllers/invites_controller.rb
index 78623595b..6067ed74c 100644
--- a/app/controllers/invites_controller.rb
+++ b/app/controllers/invites_controller.rb
@@ -3,7 +3,7 @@ class InvitesController < ApplicationController
   skip_before_filter :check_xhr
   skip_before_filter :redirect_to_login_if_required
 
-  before_filter :ensure_logged_in, only: [:destroy, :create]
+  before_filter :ensure_logged_in, only: [:destroy, :create, :check_csv_chunk, :upload_csv_chunk]
 
   def show
     invite = Invite.find_by(invite_key: params[:id])
@@ -51,4 +51,48 @@ class InvitesController < ApplicationController
     render nothing: true
   end
 
+  def check_csv_chunk
+    guardian.ensure_can_bulk_invite_to_forum!(current_user)
+
+    filename           = params.fetch(:resumableFilename)
+    identifier         = params.fetch(:resumableIdentifier)
+    chunk_number       = params.fetch(:resumableChunkNumber)
+    current_chunk_size = params.fetch(:resumableCurrentChunkSize).to_i
+
+    # path to chunk file
+    chunk = Invite.chunk_path(identifier, filename, chunk_number)
+    # check chunk upload status
+    status = HandleChunkUpload.check_chunk(chunk, current_chunk_size: current_chunk_size)
+
+    render nothing: true, status: status
+  end
+
+  def upload_csv_chunk
+    guardian.ensure_can_bulk_invite_to_forum!(current_user)
+
+    filename = params.fetch(:resumableFilename)
+    return render status: 415, text: I18n.t("bulk_invite.file_should_be_csv") unless filename.to_s.end_with?(".csv")
+
+    file               = params.fetch(:file)
+    identifier         = params.fetch(:resumableIdentifier)
+    chunk_number       = params.fetch(:resumableChunkNumber).to_i
+    chunk_size         = params.fetch(:resumableChunkSize).to_i
+    total_size         = params.fetch(:resumableTotalSize).to_i
+    current_chunk_size = params.fetch(:resumableCurrentChunkSize).to_i
+
+    # path to chunk file
+    chunk = Invite.chunk_path(identifier, filename, chunk_number)
+    # upload chunk
+    HandleChunkUpload.upload_chunk(chunk, file: file)
+
+    uploaded_file_size = chunk_number * chunk_size
+    # when all chunks are uploaded
+    if uploaded_file_size + current_chunk_size >= total_size
+      # handle bulk_invite processing in a background thread
+      Jobs.enqueue(:bulk_invite, filename: filename, identifier: identifier, chunks: chunk_number, current_user_id: current_user.id)
+    end
+
+    render nothing: true
+  end
+
 end
diff --git a/app/jobs/regular/backup_chunks_merger.rb b/app/jobs/regular/backup_chunks_merger.rb
index 7cbd37427..97846fd47 100644
--- a/app/jobs/regular/backup_chunks_merger.rb
+++ b/app/jobs/regular/backup_chunks_merger.rb
@@ -14,27 +14,11 @@ module Jobs
 
       backup_path = "#{Backup.base_directory}/#{filename}"
       tmp_backup_path = "#{backup_path}.tmp"
-
-      # delete destination files
-      File.delete(backup_path) rescue nil
-      File.delete(tmp_backup_path) rescue nil
-
-      # merge all the chunks
-      File.open(tmp_backup_path, "a") do |backup|
-        (1..chunks).each do |chunk_number|
-          # path to chunk
-          chunk_path = Backup.chunk_path(identifier, filename, chunk_number)
-          # add chunk to backup
-          backup << File.open(chunk_path).read
-        end
-      end
-      
-      # rename tmp backup to final backup name
-      FileUtils.mv(tmp_backup_path, backup_path, force: true)
-
-      # remove tmp directory
+      # path to tmp directory
       tmp_directory = File.dirname(Backup.chunk_path(identifier, filename, 0))
-      FileUtils.rm_rf(tmp_directory) rescue nil
+
+      # merge all chunks
+      HandleChunkUpload.merge_chunks(chunks, upload_path: backup_path, tmp_upload_path: tmp_backup_path, model: Backup, identifier: identifier, filename: filename, tmp_directory: tmp_directory)
     end
 
   end
diff --git a/app/jobs/regular/bulk_invite.rb b/app/jobs/regular/bulk_invite.rb
new file mode 100644
index 000000000..ed2ed63d1
--- /dev/null
+++ b/app/jobs/regular/bulk_invite.rb
@@ -0,0 +1,78 @@
+require 'csv'
+require_dependency 'system_message'
+
+module Jobs
+
+  class BulkInvite < Jobs::Base
+    sidekiq_options retry: false
+
+    def initialize
+      @logs    = []
+      @sent    = 0
+      @failed  = 0
+    end
+
+    def execute(args)
+      filename     = args[:filename]
+      identifier   = args[:identifier]
+      chunks       = args[:chunks].to_i
+      current_user = User.find_by(id: args[:current_user_id])
+
+      raise Discourse::InvalidParameters.new(:filename)   if filename.blank?
+      raise Discourse::InvalidParameters.new(:identifier) if identifier.blank?
+      raise Discourse::InvalidParameters.new(:chunks)     if chunks <= 0
+
+      csv_path = "#{Invite.base_directory}/#{filename}"
+      tmp_csv_path = "#{csv_path}.tmp"
+      # path to tmp directory
+      tmp_directory = File.dirname(Invite.chunk_path(identifier, filename, 0))
+
+      # merge all chunks
+      HandleChunkUpload.merge_chunks(chunks, upload_path: csv_path, tmp_upload_path: tmp_csv_path, model: Invite, identifier: identifier, filename: filename, tmp_directory: tmp_directory)
+
+      # read csv file, and send out invitations
+      CSV.foreach(csv_path) do |csv_info|
+        if !csv_info[0].nil?
+          if validate_email(csv_info[0])
+            Invite.invite_by_email(csv_info[0], current_user, topic=nil)
+            @sent += 1
+          else
+            log "Invalid email '#{csv_info[0]}' at line number '#{$INPUT_LINE_NUMBER}'"
+            @failed += 1
+          end
+        end
+      end
+
+      # send notification to user regarding progress
+      notify_user(current_user)
+
+      # since emails have already been sent out, delete the uploaded csv file
+      FileUtils.rm_rf(csv_path) rescue nil
+    end
+
+    def validate_email(email)
+      /\A[^@\s]+@([^@\s]+\.)+[^@\s]+\z/.match(email)
+    end
+
+    def log(message)
+      puts(message) rescue nil
+      save_log(message)
+    end
+
+    def save_log(message)
+      @logs << "[#{Time.now}] #{message}"
+    end
+
+    def notify_user(current_user)
+      if current_user
+        if (@sent > 0 && @failed == 0)
+          SystemMessage.create(current_user, :bulk_invite_succeeded, sent: @sent)
+        else
+          SystemMessage.create(current_user, :bulk_invite_failed, sent: @sent, failed: @failed, logs: @logs.join("\n"))
+        end
+      end
+    end
+
+  end
+
+end
diff --git a/app/models/invite.rb b/app/models/invite.rb
index 83a001c10..bbdf5edbd 100644
--- a/app/models/invite.rb
+++ b/app/models/invite.rb
@@ -129,6 +129,14 @@ class Invite < ActiveRecord::Base
     end
     i
   end
+
+  def self.base_directory
+    File.join(Rails.root, "public", "csv", RailsMultisite::ConnectionManagement.current_db)
+  end
+
+  def self.chunk_path(identifier, filename, chunk_number)
+    File.join(Invite.base_directory, "tmp", identifier, "#{filename}.part#{chunk_number}")
+  end
 end
 
 # == Schema Information
diff --git a/app/services/handle_chunk_upload.rb b/app/services/handle_chunk_upload.rb
new file mode 100644
index 000000000..c71a656da
--- /dev/null
+++ b/app/services/handle_chunk_upload.rb
@@ -0,0 +1,65 @@
+class HandleChunkUpload
+
+  def initialize(chunk, params={})
+    @chunk = chunk
+    @params = params
+  end
+
+  def self.check_chunk(chunk, params)
+    HandleChunkUpload.new(chunk, params).check_chunk
+  end
+
+  def self.upload_chunk(chunk, params)
+    HandleChunkUpload.new(chunk, params).upload_chunk
+  end
+
+  def self.merge_chunks(chunk, params)
+    HandleChunkUpload.new(chunk, params).merge_chunks
+  end
+
+  def check_chunk
+    # check whether the chunk has already been uploaded
+    has_chunk_been_uploaded = File.exists?(@chunk) && File.size(@chunk) == @params[:current_chunk_size]
+    # 200 = exists, 404 = not uploaded yet
+    status = has_chunk_been_uploaded ? 200 : 404
+  end
+
+  def upload_chunk
+    # path to chunk file
+    dir = File.dirname(@chunk)
+    # ensure directory exists
+    FileUtils.mkdir_p(dir) unless Dir.exists?(dir)
+    # save chunk to the directory
+    File.open(@chunk, "wb") { |f| f.write(@params[:file].tempfile.read) }
+  end
+
+  def merge_chunks
+    upload_path     = @params[:upload_path]
+    tmp_upload_path = @params[:tmp_upload_path]
+    model           = @params[:model]
+    identifier      = @params[:identifier]
+    filename        = @params[:filename]
+    tmp_directory   = @params[:tmp_directory]
+
+    # delete destination files
+    File.delete(upload_path) rescue nil
+    File.delete(tmp_upload_path) rescue nil
+
+    # merge all the chunks
+    File.open(tmp_upload_path, "a") do |file|
+      (1..@chunk).each do |chunk_number|
+        # path to chunk
+        chunk_path = model.chunk_path(identifier, filename, chunk_number)
+        # add chunk to file
+        file << File.open(chunk_path).read
+      end
+    end
+
+    # rename tmp file to final file name
+    FileUtils.mv(tmp_upload_path, upload_path, force: true)
+
+    # remove tmp directory
+    FileUtils.rm_rf(tmp_directory) rescue nil
+  end
+
+end
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index 941be6ae0..b3fb23e9a 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -414,6 +414,11 @@ en:
         days_visited: "Days Visited"
         account_age_days: "Account age in days"
         create: "Send an Invite"
+        bulk_invite:
+          text: "Batch Invite from File"
+          uploading: "UPLOADING"
+          success: "File has been uploaded successfully, you will be notified shortly with progress."
+          error: "There has been an error while uploading '{{filename}}': {{message}}"
 
       password:
         title: "Password"
diff --git a/config/locales/server.en.yml b/config/locales/server.en.yml
index 20d996d31..9e4f6e70f 100644
--- a/config/locales/server.en.yml
+++ b/config/locales/server.en.yml
@@ -39,6 +39,9 @@ en:
     embed:
       load_from_remote: "There was an error loading that post."
 
+  bulk_invite:
+    file_should_be_csv: "The uploaded file should be of csv format."
+
   backup:
     operation_already_running: "An operation is currently running. Can't start a new job right now."
     backup_file_should_be_tar_gz: "The backup file should be a .tar.gz archive."
@@ -1251,6 +1254,21 @@ en:
         %{logs}
         ```
 
+    bulk_invite_succeeded:
+      subject_template: "Bulk Invite processed successfully!"
+      text_body_template: "The bulk invite has been processed, %{sent} invites sent."
+
+    bulk_invite_failed:
+      subject_template: "Bulk Invite processed with some errors!"
+      text_body_template: |
+        The bulk invite has been processed, %{sent} invites sent and %{failed} invites failed.
+
+        Here's the log:
+
+        ```
+        %{logs}
+        ```
+
     email_error_notification:
       subject_template: "Error parsing email"
       text_body_template: |
diff --git a/config/routes.rb b/config/routes.rb
index d75b6f564..81c8163b1 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -133,8 +133,8 @@ Discourse::Application.routes.draw do
         get "cancel" => "backups#cancel"
         get "rollback" => "backups#rollback"
         put "readonly" => "backups#readonly"
-        get "upload" => "backups#check_chunk"
-        post "upload" => "backups#upload_chunk"
+        get "upload" => "backups#check_backup_chunk"
+        post "upload" => "backups#upload_backup_chunk"
       end
     end
 
@@ -361,7 +361,12 @@ Discourse::Application.routes.draw do
   get "/posts/:id/expand-embed" => "posts#expand_embed"
   get "raw/:topic_id(/:post_number)" => "posts#markdown"
 
-  resources :invites
+  resources :invites do
+    collection do
+      get "upload" => "invites#check_csv_chunk"
+      post "upload" => "invites#upload_csv_chunk"
+    end
+  end
   delete "invites" => "invites#destroy"
 
   get "onebox" => "onebox#show"
diff --git a/lib/guardian.rb b/lib/guardian.rb
index f19a18d93..bec29dc3f 100644
--- a/lib/guardian.rb
+++ b/lib/guardian.rb
@@ -204,6 +204,10 @@ class Guardian
     ( group_ids.blank? || is_admin? )
   end
 
+  def can_bulk_invite_to_forum?(user)
+    user.admin?
+  end
+
   def can_see_private_messages?(user_id)
     is_admin? || (authenticated? && @user.id == user_id)
   end
diff --git a/script/setup_dev b/script/setup_dev
index 133d76e5b..fc71f7f12 100755
--- a/script/setup_dev
+++ b/script/setup_dev
@@ -56,5 +56,3 @@ if User.count == 0
   puts
   puts "To get started run: bundle exec thin start"
 end
-
-
diff --git a/spec/controllers/invites_controller_spec.rb b/spec/controllers/invites_controller_spec.rb
index c29b42698..436a0dc27 100644
--- a/spec/controllers/invites_controller_spec.rb
+++ b/spec/controllers/invites_controller_spec.rb
@@ -148,6 +148,65 @@ describe InvitesController do
 
     end
 
+  end
+
+  context '.check_csv_chunk' do
+    it 'requires you to be logged in' do
+      lambda {
+        post :check_csv_chunk
+      }.should raise_error(Discourse::NotLoggedIn)
+    end
+
+    context 'while logged in' do
+      let(:resumableChunkNumber) { 1 }
+      let(:resumableCurrentChunkSize) { 46 }
+      let(:resumableIdentifier) { '46-discoursecsv' }
+      let(:resumableFilename) { 'discourse.csv' }
+
+      it "fails if you can't bulk invite to the forum" do
+        log_in
+        post :check_csv_chunk, resumableChunkNumber: resumableChunkNumber, resumableCurrentChunkSize: resumableCurrentChunkSize.to_i, resumableIdentifier: resumableIdentifier, resumableFilename: resumableFilename
+        response.should_not be_success
+      end
+
+    end
+
+  end
+
+  context '.upload_csv_chunk' do
+    it 'requires you to be logged in' do
+      lambda {
+        post :upload_csv_chunk
+      }.should raise_error(Discourse::NotLoggedIn)
+    end
+
+    context 'while logged in' do
+      let(:csv_file) { File.new("#{Rails.root}/spec/fixtures/csv/discourse.csv") }
+      let(:file) do
+        ActionDispatch::Http::UploadedFile.new({ filename: 'discourse.csv', tempfile: csv_file })
+      end
+      let(:resumableChunkNumber) { 1 }
+      let(:resumableChunkSize) { 1048576 }
+      let(:resumableCurrentChunkSize) { 46 }
+      let(:resumableTotalSize) { 46 }
+      let(:resumableType) { 'text/csv' }
+      let(:resumableIdentifier) { '46-discoursecsv' }
+      let(:resumableFilename) { 'discourse.csv' }
+      let(:resumableRelativePath) { 'discourse.csv' }
+
+      it "fails if you can't bulk invite to the forum" do
+        log_in
+        post :upload_csv_chunk, file: file, resumableChunkNumber: resumableChunkNumber.to_i, resumableChunkSize: resumableChunkSize.to_i, resumableCurrentChunkSize: resumableCurrentChunkSize.to_i, resumableTotalSize: resumableTotalSize.to_i, resumableType: resumableType, resumableIdentifier: resumableIdentifier, resumableFilename: resumableFilename
+        response.should_not be_success
+      end
+
+      it "allows admins to bulk invite" do
+        log_in(:admin)
+        post :upload_csv_chunk, file: file, resumableChunkNumber: resumableChunkNumber.to_i, resumableChunkSize: resumableChunkSize.to_i, resumableCurrentChunkSize: resumableCurrentChunkSize.to_i, resumableTotalSize: resumableTotalSize.to_i, resumableType: resumableType, resumableIdentifier: resumableIdentifier, resumableFilename: resumableFilename
+        response.should be_success
+      end
+
+    end
 
   end
 
diff --git a/spec/fixtures/csv/discourse.csv b/spec/fixtures/csv/discourse.csv
new file mode 100644
index 000000000..4bcc943c1
--- /dev/null
+++ b/spec/fixtures/csv/discourse.csv
@@ -0,0 +1 @@
+jeff@gmail.com
sam@yahoo.com
robin@outlook.com
neil@aol.com
regis@live.com
\ No newline at end of file