1 files changed, 8 insertions, 4 deletions
diff --git a/actionmailer/lib/action_mailer/base.rb b/actionmailer/lib/action_mailer/base.rb
index 1f5738bbab..2cb5c5514d 100644
--- a/actionmailer/lib/action_mailer/base.rb
+++ b/actionmailer/lib/action_mailer/base.rb
@@ -900,15 +900,19 @@ module ActionMailer
           yield(collector)
           collector.responses
         elsif headers[:body]
-          [{
-            body: headers.delete(:body),
-            content_type: self.class.default[:content_type] || "text/plain"
-          }]
+          collect_responses_from_text(headers)
         else
           collect_responses_from_templates(headers)
         end
       end
 
+      def collect_responses_from_text(headers)
+        [{
+          body: headers.delete(:body),
+          content_type: headers[:content_type] || self.class.default[:content_type] || "text/plain"
+        }]
+      end
+
       def collect_responses_from_templates(headers)
         templates_path = headers[:template_path] || self.class.mailer_name
         templates_name = headers[:template_name] || action_name