diff --git a/lib/noosfero.rb b/lib/noosfero.rb
index 1e093ca..83cb9cc 100644
--- a/lib/noosfero.rb
+++ b/lib/noosfero.rb
@@ -15,3 +15,5 @@ module Noosfero
     Regexp.new(pattern)
   end
 end
+
+require 'noosfero/constants'
diff --git a/lib/noosfero/constants.rb b/lib/noosfero/constants.rb
new file mode 100644
index 0000000..4c0fe80
--- /dev/null
+++ b/lib/noosfero/constants.rb
@@ -0,0 +1,3 @@
+module Noosfero::Constants
+  EMAIL_FORMAT = /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i
+end
--
libgit2 0.21.2