mail host url to email.yml

app/mailers/notify.rb

 class Notify < ActionMailer::Base
-  default_url_options[:host] = "gitlabhq.com"
-  default from: "notify@gitlabhq.com"
+  default_url_options[:host] = EMAIL_OPTS["host"]
+  default from: EMAIL_OPTS["from"]
   def new_user_email(user, password)
     @user = user
     @password = password
-    mail(:to => @user.email, :subject => "gitlab | Account was created for you", :from => EMAIL_OPTS["from"])
+    mail(:to => @user.email, :subject => "gitlab | Account was created for you")
   end
   def new_issue_email(issue)
@@ -13,14 +13,14 @@ class Notify < ActionMailer::Base
     @project = issue.project
     @issue = issue
-    mail(:to => @user.email, :subject => "gitlab | New Issue was created", :from => EMAIL_OPTS["from"])
+    mail(:to => @user.email, :subject => "gitlab | New Issue was created")
   end
   def note_wall_email(user, note)
     @user = user
     @note = note
     @project = note.project
-    mail(:to => @user.email, :subject => "gitlab | #{@note.project.name} ", :from => EMAIL_OPTS["from"])
+    mail(:to => @user.email, :subject => "gitlab | #{@note.project.name} ")
   end
   def note_commit_email(user, note)
@@ -28,7 +28,7 @@ class Notify < ActionMailer::Base
     @note = note
     @project = note.project
     @commit = @project.repo.commits(note.noteable_id).first
-    mail(:to => @user.email, :subject => "gitlab | #{@note.project.name} ", :from => EMAIL_OPTS["from"])
+    mail(:to => @user.email, :subject => "gitlab | #{@note.project.name} ")
   end
   def note_issue_email(user, note)
@@ -36,6 +36,6 @@ class Notify < ActionMailer::Base
     @note = note
     @project = note.project
     @issue = note.noteable
-    mail(:to => @user.email, :subject => "gitlab | #{@note.project.name} ", :from => EMAIL_OPTS["from"])
+    mail(:to => @user.email, :subject => "gitlab | #{@note.project.name} ")
   end
 end

config/email.yml

 from: notify@gitlabhq.com
+host: gitlabhq.com