diff --git a/various/mail_prefixer.py b/various/mail_prefixer.py
index 76545bc3..456b6be7 100644
--- a/various/mail_prefixer.py
+++ b/various/mail_prefixer.py
@@ -13,9 +13,11 @@ class PrefixingMailBackend(DjangoSMTPBackend):
 		prefix = '[Mail z testwebu]'
 		for message in messages:
 			# We hope that this is a django.core.mail.message.EmailMessage
-			message.subject = prefix + ' ' + message.subject
-			message.body = "Bylo by posláno na e-maily: " + str(message.recipients()) + "\n" + message.body
-			message.to = settings.TESTOVACI_EMAILOVA_KONFERENCE
-			message.cc = []
-			message.bcc = []
+
+			if len(message.from_email) == 0 or message.from_email[0] != settings.SERVER_EMAIL:
+				message.subject = prefix + ' ' + message.subject
+				message.body = "Bylo by posláno na e-maily: " + str(message.recipients()) + "\n\n" + message.body
+				message.to = settings.TESTOVACI_EMAILOVA_KONFERENCE
+				message.cc = []
+				message.bcc = []
 		return super().send_messages(messages)