diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..3f0e270
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,6 @@
+AMQP_SERVER=amqp://localhost
+QUEUE_NAME=
+SENDER_EMAIL=
+TRANS_NAME=
+TRANS_PASS=
+SENDING_BLUE_API_KEY=
\ No newline at end of file
diff --git a/index.mjs b/index.mjs
index d899da7..1f3c8e8 100644
--- a/index.mjs
+++ b/index.mjs
@@ -8,18 +8,18 @@ import dotenv from 'dotenv'
 dotenv.config()
 
 const app = express()
-const queueName = process.env.queueName
-const senderEmail = process.env.sender_email
+const queueName = process.env.QUEUE_NAME
+const senderEmail = process.env.SENDER_EMAIL
 // const mailTransporter = nodemailer.createTransport({
 //     service: 'gmail',
 //     auth: {
-//         user: process.env.transporter_username,
-//         pass: process.env.transporter_passcode
+//         user: process.env.TRANS_NAME,
+//         pass: process.env.TRANS_PASS
 //     }
 // })
 var defaultClient = SibApiV3Sdk.ApiClient.instance
 var apiKey = defaultClient.authentications['api-key']
-apiKey.apiKey = process.env.sendinblue_api_key
+apiKey.apiKey = process.env.SENDING_BLUE_API_KEY
 var apiInstance = new SibApiV3Sdk.TransactionalEmailsApi()
 var sendSmtpEmail = new SibApiV3Sdk.SendSmtpEmail()
 
@@ -64,7 +64,7 @@ function sendReceipt(recepientEmail, receipt) {
 
     // ============ GMAIL's ============
     // var nodemailerOptions = {
-    //     from: process.env.senderMail,
+    //     from: process.env.SENDER_EMAIL,
     //     to: receiverEmail,
     //     subject: "Nota " + date.toLocaleDateString(),
     //     text: receiptToSend