diff --git a/docker/.env.example b/docker/.env.example
index 94fdccb7..f637abb9 100644
--- a/docker/.env.example
+++ b/docker/.env.example
@@ -9,7 +9,7 @@ POSTGRES_PASSWORD=GPVs/E/{5&qe
 DJANGO_SETTINGS_MODULE=project.settings
 DATABASE_SERVICE_HOST=db
 SECRET_KEY=jelm*91lj(_-o20+6^a+bgv!4s6e_efry^#+f#=1ak&s1xr-2j
-MAILGUN_API_KEY=key-ec6af2d43d031d59bff6b1c8fb9390cb
+MAILGUN_API_KEY=key-ec6af2d43d031d59bff6b1c8fb9390c
 MAILGUN_SENDER_DOMAIN=mail.9ev.ru
 DEFAULT_FROM_EMAIL=postmaster@mail.9ev.ru
 TWILIO_ACCOUNT=ACdf4a96b776cc764bc3ec0f0e136ba550
diff --git a/docker/.env.review b/docker/.env.review
index 351dc795..dc0ff7ab 100644
--- a/docker/.env.review
+++ b/docker/.env.review
@@ -9,7 +9,7 @@ POSTGRES_PASSWORD=GPVs/E/{5&qe
 DJANGO_SETTINGS_MODULE=project.settings
 DATABASE_SERVICE_HOST=db
 SECRET_KEY=jelm*91lj(_-o20+6^a+bgv!4s6e_efry^#+f#=1ak&s1xr-2j
-MAILGUN_API_KEY=key-ec6af2d43d031d59bff6b1c8fb9390cb
+MAILGUN_API_KEY=key-ec6af2d43d031d59bff6b1c8fb9390c
 MAILGUN_SENDER_DOMAIN=mail.9ev.ru
 DEFAULT_FROM_EMAIL=postmaster@mail.9ev.ru
 TWILIO_ACCOUNT=ACdf4a96b776cc764bc3ec0f0e136ba550
diff --git a/project/settings.py b/project/settings.py
index e92ac41b..84cae46b 100644
--- a/project/settings.py
+++ b/project/settings.py
@@ -185,8 +185,8 @@ LOGIN_URL = '/'
 # https://github.com/anymail/django-anymail
 
 ANYMAIL = {
-    'MAILGUN_API_KEY': os.getenv('MAILGUN_API_KEY', 'key-ec6af2d43d031d59bff6b1c8fb9390cb'),
-    'MAILGUN_SENDER_DOMAIN': os.getenv('MAILGUN_SENDER_DOMAIN', 'mail.9ev.ru'),
+    'MAILGUN_API_KEY': os.getenv('MAILGUN_API_KEY', ''),
+    'MAILGUN_SENDER_DOMAIN': os.getenv('MAILGUN_SENDER_DOMAIN', ''),
 }
 EMAIL_BACKEND = 'anymail.backends.mailgun.EmailBackend'
 DEFAULT_FROM_EMAIL = os.getenv('DEFAULT_FROM_EMAIL', 'postmaster@mail.9ev.ru')
@@ -250,11 +250,11 @@ CELERY_BEAT_SCHEDULE = {
         'schedule': timedelta(hours=1),
         'args': (),
     },
-    'send_certificates': {
-        'task': 'apps.notification.tasks.send_certificates',
-        'schedule': crontab(hour=19),
-        'args': (),
-    },
+    #'send_certificates': {
+    #    'task': 'apps.notification.tasks.send_certificates',
+    #    'schedule': crontab(hour=19),
+    #    'args': (),
+    #},
     'sendgrid_update_recipients': {
         'task': 'apps.notification.tasks.sendgrid_update_recipients',
         'schedule': crontab(minute=0, hour=3),