diff -r 9484216289fe app/models/mail_handler.rb
--- a/app/models/mail_handler.rb	Fri Mar 25 13:36:42 2011 +0600
+++ b/app/models/mail_handler.rb	Tue Mar 29 13:36:24 2011 +0700
@@ -35,6 +35,9 @@
     @@handler_options[:allow_override] << 'project' unless @@handler_options[:issue].has_key?(:project)
     # Status overridable by default
     @@handler_options[:allow_override] << 'status' unless @@handler_options[:issue].has_key?(:status)    
+
+    @@handler_options[:watchers] = @@handler_options[:watchers].split(',').collect(&:strip) if @@handler_options[:watchers].is_a?(String)
+    @@handler_options[:watchers] ||= []
     
     @@handler_options[:no_permission_check] = (@@handler_options[:no_permission_check].to_s == '1' ? true : false)
     super email
@@ -210,7 +213,7 @@
   # appropriate permission
   def add_watchers(obj)
     if user.allowed_to?("add_#{obj.class.name.underscore}_watchers".to_sym, obj.project)
-      addresses = [email.to, email.cc].flatten.compact.uniq.collect {|a| a.strip.downcase}
+      addresses = ([email.to, email.cc] + @@handler_options[:watchers]).flatten.compact.uniq.collect {|a| a.strip.downcase}
       unless addresses.empty?
         watchers = User.active.find(:all, :conditions => ['LOWER(mail) IN (?)', addresses])
         watchers.each {|w| obj.add_watcher(w)}
diff -r 9484216289fe lib/tasks/email.rake
--- a/lib/tasks/email.rake	Fri Mar 25 13:36:42 2011 +0600
+++ b/lib/tasks/email.rake	Tue Mar 29 13:36:24 2011 +0700
@@ -39,6 +39,7 @@
   allow_override=ATTRS     allow email content to override attributes
                            specified by previous options
                            ATTRS is a comma separated list of attributes
+  watchers=WATCHERS        comma separated list of watcher emails
 
 Examples:
   # No project specified. Emails MUST contain the 'Project' keyword:
@@ -58,6 +59,7 @@
       options[:allow_override] = ENV['allow_override'] if ENV['allow_override']
       options[:unknown_user] = ENV['unknown_user'] if ENV['unknown_user']
       options[:no_permission_check] = ENV['no_permission_check'] if ENV['no_permission_check']
+      options[:watchers] = ENV['watchers'] if ENV['watchers']
       
       MailHandler.receive(STDIN.read, options)
     end
@@ -91,6 +93,7 @@
   allow_override=ATTRS     allow email content to override attributes
                            specified by previous options
                            ATTRS is a comma separated list of attributes
+  watchers=WATCHERS        comma separated list of watcher emails
                            
 Processed emails control options:
   move_on_success=MAILBOX  move emails that were successfully received
@@ -129,6 +132,7 @@
       options[:allow_override] = ENV['allow_override'] if ENV['allow_override']
       options[:unknown_user] = ENV['unknown_user'] if ENV['unknown_user']
       options[:no_permission_check] = ENV['no_permission_check'] if ENV['no_permission_check']
+      options[:watchers] = ENV['watchers'] if ENV['watchers']
 
       Redmine::IMAP.check(imap_options, options)
     end
@@ -162,6 +166,7 @@
       options[:allow_override] = ENV['allow_override'] if ENV['allow_override']
       options[:unknown_user] = ENV['unknown_user'] if ENV['unknown_user']
       options[:no_permission_check] = ENV['no_permission_check'] if ENV['no_permission_check']
+      options[:watchers] = ENV['watchers'] if ENV['watchers']
       
       Redmine::POP3.check(pop_options, options)
     end