diff --git a/app/models/issue_observer.rb b/app/models/issue_observer.rb
index 7215dc56332bdbbff73e1362b535f4e925a3ca65..a1f9fade9554729bc29cd51ffe14fc0b17e36c4c 100644
--- a/app/models/issue_observer.rb
+++ b/app/models/issue_observer.rb
@@ -2,7 +2,7 @@ class IssueObserver < ActiveRecord::Observer
   cattr_accessor :current_user
 
   def after_create(issue)
-    Notify.new_issue_email(issue.id) if issue.assignee != current_user
+    Notify.new_issue_email(issue.id).deliver if issue.assignee != current_user
   end
 
   def after_update(issue)
@@ -15,7 +15,7 @@ class IssueObserver < ActiveRecord::Observer
     recipient_ids = [issue.assignee_id, issue.assignee_id_was].keep_if {|id| id != current_user.id }
 
     recipient_ids.each do |recipient_id|
-      Notify.reassigned_issue_email(recipient_id, issue.id, issue.assignee_id_was)
+      Notify.reassigned_issue_email(recipient_id, issue.id, issue.assignee_id_was).deliver
     end
   end
 end
diff --git a/spec/models/issue_observer_spec.rb b/spec/models/issue_observer_spec.rb
index b66803e6868db5e6c7025246754a0d7a7572a3f9..8270d3db90fc1c73e87a53b15157d2e11ae1c64e 100644
--- a/spec/models/issue_observer_spec.rb
+++ b/spec/models/issue_observer_spec.rb
@@ -20,7 +20,8 @@ describe IssueObserver do
     end
 
     it 'sends an email to the assignee' do
-      Notify.should_receive(:new_issue_email).with(issue.id)
+      Notify.should_receive(:new_issue_email).with(issue.id).
+        and_return(double(:deliver => true))
 
       subject.after_create(issue)
     end
@@ -107,9 +108,18 @@ describe IssueObserver do
       issue.stub(:assignee_id_was).and_return(previous_assignee.id)
     end
 
+    def it_sends_a_reassigned_email_to(recipient)
+      Notify.should_receive(:reassigned_issue_email).with(recipient, issue.id, previous_assignee.id).
+        and_return(double(:deliver => true))
+    end
+
+    def it_does_not_send_a_reassigned_email_to(recipient)
+      Notify.should_not_receive(:reassigned_issue_email).with(recipient, issue.id, previous_assignee.id)
+    end
+
     it 'sends a reassigned email to the previous and current assignees' do
-      Notify.should_receive(:reassigned_issue_email).with(assignee.id, issue.id, previous_assignee.id)
-      Notify.should_receive(:reassigned_issue_email).with(previous_assignee.id, issue.id, previous_assignee.id)
+      it_sends_a_reassigned_email_to assignee.id
+      it_sends_a_reassigned_email_to previous_assignee.id
 
       subject.send_reassigned_email(issue)
     end
@@ -117,13 +127,15 @@ describe IssueObserver do
     context 'does not send an email to the user who made the reassignment' do
       it 'if the user is the assignee' do
         subject.stub(:current_user).and_return(assignee)
-        Notify.should_not_receive(:reassigned_issue_email).with(assignee.id, issue.id, previous_assignee.id)
+        it_sends_a_reassigned_email_to previous_assignee.id
+        it_does_not_send_a_reassigned_email_to assignee.id
 
         subject.send_reassigned_email(issue)
       end
       it 'if the user is the previous assignee' do
         subject.stub(:current_user).and_return(previous_assignee)
-        Notify.should_not_receive(:reassigned_issue_email).with(previous_assignee.id, issue.id, previous_assignee.id)
+        it_sends_a_reassigned_email_to assignee.id
+        it_does_not_send_a_reassigned_email_to previous_assignee.id
 
         subject.send_reassigned_email(issue)
       end