diff --git a/build/start-container.sh b/build/start-container.sh
index 88d038f..3877c2c 100644
--- a/build/start-container.sh
+++ b/build/start-container.sh
@@ -20,16 +20,18 @@ if [ -n "${SMTP_PASSWORD_FILE}" ]; then
     SMTP_PASSWORD=$(cat ${SMTP_PASSWORD_FILE});
 fi
 
+IFS=
+
 if [ -n "${EMAIL_FILE}" ]; then
     EMAIL=$(cat ${EMAIL_FILE});
 else
-    if [ -n "${EMAIL}" ]; then
-        EMAIL="To: ${TO_ADDRESS}\nSubject: ${SUBJECT}\n\n${MESSAGE}";
+    if [ -z "${EMAIL}" ]; then
+        EMAIL="To: ${TO_ADDRESSES}\nSubject: ${SUBJECT}\n\n${MESSAGE}";
     fi
 fi
 
-if [ -n "${MSMTP_CONFIG_FILE}" ]; then
-    MSMTP_CONFIG_FILE="~/.msmtprc"
+if [ -z "${MSMTP_CONFIG_FILE}" ]; then
+    MSMTP_CONFIG_FILE=~/.msmtprc
     touch ${MSMTP_CONFIG_FILE}
     chmod 600 ${MSMTP_CONFIG_FILE}
     echo "defaults