lib/resend/mailer.rb in resend-0.17.1 vs lib/resend/mailer.rb in resend-0.17.2

@@ -90,19 +90,25 @@
       end
 
       params
     end
 
+    # Remove nils from header values
+    def cleanup_headers(headers)
+      headers.delete_if { |_k, v| v.nil? }
+    end
+
     # Gets the values of the headers that are set through the `#mail` method
     #
     # @param Mail mail Rails Mail object
     # @return Hash hash with mail headers values
     def mail_headers_values(mail)
       params = {}
       mail[:headers].unparsed_value.each do |k, v|
         params[k.to_s] = v
       end
+      cleanup_headers(params)
       params
     end
 
     # Gets the values of the headers that are set through the `#headers` method
     #
@@ -111,11 +117,10 @@
     def headers_values(mail)
       params = {}
       unignored_headers(mail).each do |h|
         params[h.name.to_s] = h.unparsed_value
       end
-      # remove nil header values
-      params.delete_if { |_k, v| v.nil? }
+      cleanup_headers(params)
       params
     end
 
     #
     # Add tags fields