diff --git a/README.md b/README.md
index 335e0f1..f9d641b 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,10 @@ There are two addition: `email-tls-skip-verify` and `email-addr-to`. If you are
 ## Quick start
 
 ```
-wget https://github.com/cycloidio/cy-smtp/releases/download/v0.2.1/cy-smtp-v0.2.1-linux-amd64.tar.gz
+wget https://github.com/cycloidio/cy-smtp/releases/download/v0.2.3/cy-smtp-v0.2.3-linux-amd64.tar.gz
 tar xf cy-smtp-v*-linux-amd64.tar.gz
 
-./cy-smtp --config-file /opt/config.yml
+export SMTP_FROM=$(grep email-addr-from config.yml | sed 's@"@@g;s@<@@g;s@>@@g' | sed -E 's/.* ([^ ]+@[^ ]+)/\1/')
+export SMTP_RETURN=$(grep email-addr-return-path config.yml | sed 's/"//g' | awk '{print $2}')
+./cy-smtp --config-file /opt/config.yml -f $SMTP_FROM  -t $SMTP_RETURN
 ```