diff --git a/ref-test/app/config.py b/ref-test/app/config.py
index c965410..0d1ac88 100644
--- a/ref-test/app/config.py
+++ b/ref-test/app/config.py
@@ -15,16 +15,16 @@ class Config(object):
     SQLALCHEMY_TRACK_MODIFICATIONS = False
 
     MAIL_SERVER = os.getenv('MAIL_SERVER')
-    MAIL_PORT = int(os.getenv('MAIL_PORT'))
+    MAIL_PORT = int(os.getenv('MAIL_PORT') or 25)
     MAIL_USE_TLS = False
     MAIL_USE_SSL = False
     MAIL_DEBUG = False
     MAIL_USERNAME = os.getenv('MAIL_USERNAME')
     MAIL_PASSWORD = os.getenv('MAIL_PASSWORD')
     MAIL_DEFAULT_SENDER = os.getenv('MAIL_DEFAULT_SENDER')
-    MAIL_MAX_EMAILS = int(os.getenv('MAIL_MAX_EMAILS'))
+    MAIL_MAX_EMAILS = int(os.getenv('MAIL_MAX_EMAILS') or 25)
     MAIL_SUPPRESS_SEND = False
-    MAIL_ASCII_ATTACHMENTS = bool(os.getenv('MAIL_ASCII_ATTACHMENTS'))
+    MAIL_ASCII_ATTACHMENTS = bool(os.getenv('MAIL_ASCII_ATTACHMENTS') or True)
 
 class Production(Config):
     pass