diff --git a/app/mailers/emails/groups.rb b/app/mailers/emails/groups.rb
index 2e9d28981e3..1c8ae122c46 100644
--- a/app/mailers/emails/groups.rb
+++ b/app/mailers/emails/groups.rb
@@ -5,7 +5,7 @@ module Emails
       @group = @membership.group
 
       mail(to: @membership.user.email,
-           subject: subject("access to group was granted"))
+           subject: subject("Access to group was granted"))
     end
   end
 end
diff --git a/app/mailers/emails/issues.rb b/app/mailers/emails/issues.rb
index 6eda88c7921..5abdf99529c 100644
--- a/app/mailers/emails/issues.rb
+++ b/app/mailers/emails/issues.rb
@@ -3,14 +3,14 @@ module Emails
     def new_issue_email(recipient_id, issue_id)
       @issue = Issue.find(issue_id)
       @project = @issue.project
-      mail(to: recipient(recipient_id), subject: subject("new issue ##{@issue.iid}", @issue.title))
+      mail(to: recipient(recipient_id), subject: subject("New issue ##{@issue.iid}", @issue.title))
     end
 
     def reassigned_issue_email(recipient_id, issue_id, previous_assignee_id)
       @issue = Issue.find(issue_id)
       @previous_assignee = User.find_by_id(previous_assignee_id) if previous_assignee_id
       @project = @issue.project
-      mail(to: recipient(recipient_id), subject: subject("changed issue ##{@issue.iid}", @issue.title))
+      mail(to: recipient(recipient_id), subject: subject("Changed issue ##{@issue.iid}", @issue.title))
     end
 
     def closed_issue_email(recipient_id, issue_id, updated_by_user_id)
@@ -27,7 +27,7 @@ module Emails
       @project = @issue.project
       @updated_by = User.find updated_by_user_id
       mail(to: recipient(recipient_id),
-           subject: subject("changed issue ##{@issue.iid}", @issue.title))
+           subject: subject("Changed issue ##{@issue.iid}", @issue.title))
     end
   end
 end
diff --git a/app/mailers/emails/merge_requests.rb b/app/mailers/emails/merge_requests.rb
index 57c1925fa47..67544f2a331 100644
--- a/app/mailers/emails/merge_requests.rb
+++ b/app/mailers/emails/merge_requests.rb
@@ -2,24 +2,24 @@ module Emails
   module MergeRequests
     def new_merge_request_email(recipient_id, merge_request_id)
       @merge_request = MergeRequest.find(merge_request_id)
-      mail(to: recipient(recipient_id), subject: subject("new merge request !#{@merge_request.iid}", @merge_request.title))
+      mail(to: recipient(recipient_id), subject: subject("New merge request ##{@merge_request.iid}", @merge_request.title))
     end
 
     def reassigned_merge_request_email(recipient_id, merge_request_id, previous_assignee_id)
       @merge_request = MergeRequest.find(merge_request_id)
       @previous_assignee = User.find_by_id(previous_assignee_id) if previous_assignee_id
-      mail(to: recipient(recipient_id), subject: subject("changed merge request !#{@merge_request.iid}", @merge_request.title))
+      mail(to: recipient(recipient_id), subject: subject("Changed merge request ##{@merge_request.iid}", @merge_request.title))
     end
 
     def closed_merge_request_email(recipient_id, merge_request_id, updated_by_user_id)
       @merge_request = MergeRequest.find(merge_request_id)
       @updated_by = User.find updated_by_user_id
-      mail(to: recipient(recipient_id), subject: subject("Closed merge request !#{@merge_request.iid}", @merge_request.title))
+      mail(to: recipient(recipient_id), subject: subject("Closed merge request ##{@merge_request.iid}", @merge_request.title))
     end
 
     def merged_merge_request_email(recipient_id, merge_request_id)
       @merge_request = MergeRequest.find(merge_request_id)
-      mail(to: recipient(recipient_id), subject: subject("Accepted merge request !#{@merge_request.iid}", @merge_request.title))
+      mail(to: recipient(recipient_id), subject: subject("Accepted merge request ##{@merge_request.iid}", @merge_request.title))
     end
   end
 
diff --git a/app/mailers/emails/notes.rb b/app/mailers/emails/notes.rb
index ba4f0dd862c..e967cf6dc73 100644
--- a/app/mailers/emails/notes.rb
+++ b/app/mailers/emails/notes.rb
@@ -4,27 +4,27 @@ module Emails
       @note = Note.find(note_id)
       @commit = @note.noteable
       @project = @note.project
-      mail(to: recipient(recipient_id), subject: subject("note for commit #{@commit.short_id}", @commit.title))
+      mail(to: recipient(recipient_id), subject: subject("Note for commit #{@commit.short_id}", @commit.title))
     end
 
     def note_issue_email(recipient_id, note_id)
       @note = Note.find(note_id)
       @issue = @note.noteable
       @project = @note.project
-      mail(to: recipient(recipient_id), subject: subject("note for issue ##{@issue.iid}"))
+      mail(to: recipient(recipient_id), subject: subject("Note for issue ##{@issue.iid}"))
     end
 
     def note_merge_request_email(recipient_id, note_id)
       @note = Note.find(note_id)
       @merge_request = @note.noteable
       @project = @note.project
-      mail(to: recipient(recipient_id), subject: subject("note for merge request ##{@merge_request.iid}"))
+      mail(to: recipient(recipient_id), subject: subject("Note for merge request ##{@merge_request.iid}"))
     end
 
     def note_wall_email(recipient_id, note_id)
       @note = Note.find(note_id)
       @project = @note.project
-      mail(to: recipient(recipient_id), subject: subject("note on wall"))
+      mail(to: recipient(recipient_id), subject: subject("Note on wall"))
     end
   end
 end
diff --git a/app/mailers/emails/projects.rb b/app/mailers/emails/projects.rb
index 4d5fe9ef614..0e40450bfee 100644
--- a/app/mailers/emails/projects.rb
+++ b/app/mailers/emails/projects.rb
@@ -4,14 +4,14 @@ module Emails
       @users_project = UsersProject.find user_project_id
       @project = @users_project.project
       mail(to: @users_project.user.email,
-           subject: subject("access to project was granted"))
+           subject: subject("Access to project was granted"))
     end
 
     def project_was_moved_email(project_id, user_id)
       @user = User.find user_id
       @project = Project.find project_id
       mail(to: @user.email,
-           subject: subject("project was moved"))
+           subject: subject("Project was moved"))
     end
   end
 end
diff --git a/app/views/notify/new_merge_request_email.html.haml b/app/views/notify/new_merge_request_email.html.haml
index 6b2782ebb0b..321f9418ded 100644
--- a/app/views/notify/new_merge_request_email.html.haml
+++ b/app/views/notify/new_merge_request_email.html.haml
@@ -1,5 +1,5 @@
 %p
-  = "New Merge Request !#{@merge_request.iid}"
+  = "New Merge Request ##{@merge_request.iid}"
 %p
   = link_to_gfm truncate(@merge_request.title, length: 40), project_merge_request_url(@merge_request.target_project, @merge_request)
 %p
diff --git a/app/views/notify/new_merge_request_email.text.erb b/app/views/notify/new_merge_request_email.text.erb
index 2d27350486e..16be4bb619f 100644
--- a/app/views/notify/new_merge_request_email.text.erb
+++ b/app/views/notify/new_merge_request_email.text.erb
@@ -1,4 +1,4 @@
-New Merge Request <%= @merge_request.iid %>
+New Merge Request #<%= @merge_request.iid %>
 
 <%= url_for(project_merge_request_url(@merge_request.target_project, @merge_request)) %>
 
diff --git a/app/views/notify/reassigned_merge_request_email.html.haml b/app/views/notify/reassigned_merge_request_email.html.haml
index 3a615f86e69..d2d82d36c48 100644
--- a/app/views/notify/reassigned_merge_request_email.html.haml
+++ b/app/views/notify/reassigned_merge_request_email.html.haml
@@ -1,5 +1,5 @@
 %p
-  = "Reassigned Merge Request !#{@merge_request.iid}"
+  = "Reassigned Merge Request ##{@merge_request.iid}"
   = link_to_gfm truncate(@merge_request.title, length: 30), project_merge_request_url(@merge_request.target_project, @merge_request)
 %p
   Assignee changed
diff --git a/app/views/notify/reassigned_merge_request_email.text.erb b/app/views/notify/reassigned_merge_request_email.text.erb
index eecf055ff6f..87a7847e06d 100644
--- a/app/views/notify/reassigned_merge_request_email.text.erb
+++ b/app/views/notify/reassigned_merge_request_email.text.erb
@@ -1,4 +1,4 @@
-Reassigned Merge Request <%= @merge_request.iid %>
+Reassigned Merge Request #<%= @merge_request.iid %>
 
 <%= url_for(project_merge_request_url(@merge_request.target_project, @merge_request)) %>
 
diff --git a/spec/mailers/notify_spec.rb b/spec/mailers/notify_spec.rb
index 4fda3cf908c..d287239cfe3 100644
--- a/spec/mailers/notify_spec.rb
+++ b/spec/mailers/notify_spec.rb
@@ -110,7 +110,7 @@ describe Notify do
           it_behaves_like 'an assignee email'
 
           it 'has the correct subject' do
-            should have_subject /#{project.name} \| new issue ##{issue.iid} \| #{issue.title}/
+            should have_subject /#{project.name} \| New issue ##{issue.iid} \| #{issue.title}/
           end
 
           it 'contains a link to the new issue' do
@@ -126,7 +126,7 @@ describe Notify do
           it_behaves_like 'a multiple recipients email'
 
           it 'has the correct subject' do
-            should have_subject /changed issue ##{issue.iid} \| #{issue.title}/
+            should have_subject /Changed issue ##{issue.iid} \| #{issue.title}/
           end
 
           it 'contains the name of the previous assignee' do
@@ -148,7 +148,7 @@ describe Notify do
           subject { Notify.issue_status_changed_email(recipient.id, issue.id, status, current_user) }
 
           it 'has the correct subject' do
-            should have_subject /changed issue ##{issue.iid} \| #{issue.title}/i
+            should have_subject /Changed issue ##{issue.iid} \| #{issue.title}/i
           end
 
           it 'contains the new status' do
@@ -175,7 +175,7 @@ describe Notify do
           it_behaves_like 'an assignee email'
 
           it 'has the correct subject' do
-            should have_subject /new merge request !#{merge_request.iid}/
+            should have_subject /New merge request ##{merge_request.iid}/
           end
 
           it 'contains a link to the new merge request' do
@@ -199,7 +199,7 @@ describe Notify do
           it_behaves_like 'a multiple recipients email'
 
           it 'has the correct subject' do
-            should have_subject /changed merge request !#{merge_request.iid}/
+            should have_subject /Changed merge request ##{merge_request.iid}/
           end
 
           it 'contains the name of the previous assignee' do
@@ -224,7 +224,7 @@ describe Notify do
       subject { Notify.project_was_moved_email(project.id, user.id) }
 
       it 'has the correct subject' do
-        should have_subject /project was moved/
+        should have_subject /Project was moved/
       end
 
       it 'contains name of project' do
@@ -244,7 +244,7 @@ describe Notify do
                                    user: user) }
       subject { Notify.project_access_granted_email(users_project.id) }
       it 'has the correct subject' do
-        should have_subject /access to project was granted/
+        should have_subject /Access to project was granted/
       end
       it 'contains name of project' do
         should have_body_text /#{project.name}/
@@ -302,7 +302,7 @@ describe Notify do
         it_behaves_like 'a note email'
 
         it 'has the correct subject' do
-          should have_subject /note for commit #{commit.short_id}/
+          should have_subject /Note for commit #{commit.short_id}/
         end
 
         it 'contains a link to the commit' do
@@ -320,7 +320,7 @@ describe Notify do
         it_behaves_like 'a note email'
 
         it 'has the correct subject' do
-          should have_subject /note for merge request ##{merge_request.iid}/
+          should have_subject /Note for merge request ##{merge_request.iid}/
         end
 
         it 'contains a link to the merge request note' do
@@ -338,7 +338,7 @@ describe Notify do
         it_behaves_like 'a note email'
 
         it 'has the correct subject' do
-          should have_subject /note for issue ##{issue.iid}/
+          should have_subject /Note for issue ##{issue.iid}/
         end
 
         it 'contains a link to the issue note' do
@@ -356,7 +356,7 @@ describe Notify do
     subject { Notify.group_access_granted_email(membership.id) }
 
     it 'has the correct subject' do
-      should have_subject /access to group was granted/
+      should have_subject /Access to group was granted/
     end
 
     it 'contains name of project' do