diff --git a/src/services/registration.services.js b/src/services/registration.services.js
index b47e301..2db643b 100644
--- a/src/services/registration.services.js
+++ b/src/services/registration.services.js
@@ -7,6 +7,8 @@ const domains = require('../configs/domains.configs')
 
 async function createRegKey(body) {
     log.out(`registerServices.createRegKey: Incoming request`, "INFO")
+    if (!clean.checkEmailValid(body.mail)) {return {status: 400, message:"address format invalid"}
+    }
     const domain = await clean.getDomainFromEmail(body.email) // The function should validate the email
     log.out(`registerServices: New registration request from domain: ${domain}`, "info")
     if (domains.includes(domain)) {
diff --git a/src/utils/sanitizer.utils.js b/src/utils/sanitizer.utils.js
index e0e6e7e..f8282a7 100644
--- a/src/utils/sanitizer.utils.js
+++ b/src/utils/sanitizer.utils.js
@@ -43,9 +43,18 @@ async function getDomainFromEmail(mail) { // Needs testing
     return split[1]
 }
 
+async function checkEmailValid(mail) {
+    const regex = /^(([^<>()[\]\.,;:\s@\"]+(\.[^<>()[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()[\]\.,;:\s@\"]+\.)+[^<>()[\]\.,;:\s@\"]{2,})$/i;
+    const result = mail.match(regex)
+      ? true
+      : false; log.out(`sanitizerUtils.checkEmailValid: Invalid email format used: ${mail}`,"warn")
+    return result;
+}
+
 module.exports = {
     cleanApiEndpointTxt,
     cleanApiEndpointNum,
     cleanNrcc,
-    getDomainFromEmail
+    getDomainFromEmail,
+    checkEmailValid
 }
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