diff --git a/lib/locomotive/steam/middlewares/auth.rb b/lib/locomotive/steam/middlewares/auth.rb
index 0d1adaf5..88116bb4 100644
--- a/lib/locomotive/steam/middlewares/auth.rb
+++ b/lib/locomotive/steam/middlewares/auth.rb
@@ -196,6 +196,7 @@ def smtp
               password:             smtp_config['password'],
               authentication:       smtp_config['authentication'] || 'plain',
               enable_starttls_auto: (smtp_config['enable_starttls_auto'] || "0").to_bool,
+              ssl:                  (smtp_config['ssl'] || "0").to_bool,
             }
           end
         end