diff --git a/app/models/mailer.rb b/app/models/mailer.rb
index 3d34d94..c3ad0bb 100644
--- a/app/models/mailer.rb
+++ b/app/models/mailer.rb
@@ -46,11 +46,13 @@ class Mailer < ActionMailer::Base
 
   # Notifies users about a new issue
   def self.deliver_issue_add(issue)
+    Thread.new do
       to = issue.notified_users
       cc = issue.notified_watchers - to
       issue.each_notification(to + cc) do |users|
         Mailer.issue_add(issue, to & users, cc & users).deliver
       end
+    end
   end
 
   # Builds a mail for notifying to_users and cc_users about an issue update
@@ -78,6 +80,7 @@ class Mailer < ActionMailer::Base
 
   # Notifies users about an issue update
   def self.deliver_issue_edit(journal)
+    Thread.new do
       issue = journal.journalized.reload
       to = journal.notified_users
       cc = journal.notified_watchers - to
@@ -86,6 +89,7 @@ class Mailer < ActionMailer::Base
           Mailer.issue_edit(journal, to & users2, cc & users2).deliver
         end
       end
+    end
   end
 
   def reminder(user, issues, days)
-- 
1.9.5.msysgit.1