现在可以通过rake redmine📧test[guange] 发送测试邮件

app/models/mailer.rb

@@ -817,12 +817,12 @@ class Mailer < ActionMailer::Base
       headers[:references] = @references_objects.collect {|o| "<#{self.class.message_id_for(o)}>"}.join(' ')
     end
 
+    set_language_if_valid @initial_language
     super headers do |format|
       format.text
       format.html unless Setting.plain_text_mail?
     end
 
-    set_language_if_valid @initial_language
   end
 
   def initialize(*args)

config/configuration.yml

@@ -215,6 +215,7 @@ production:
 # specific configuration options for development environment
 # that overrides the default ones
 development:
+  email_delivery:
     delivery_method: :smtp
     smtp_settings:
       address: mail.trustie.net

lib/tasks/email.rake

@@ -186,9 +186,9 @@ END_DESC
 
       ActionMailer::Base.raise_delivery_errors = true
       begin
-        Mailer.with_synched_deliveries do
+        # Mailer.with_synched_deliveries do
-          Mailer.test_email(user).deliver
+          Mailer.test_email(user).deliver!
-        end
+        # end
         puts l(:notice_email_sent, user.mail)
       rescue Exception => e
         abort l(:notice_email_error, e.message)