diff --git a/tryton/trytond/trytond/tools/email_.py b/tryton/trytond/trytond/tools/email_.py
index f8141ec84d..061f01a17e 100644
--- a/tryton/trytond/trytond/tools/email_.py
+++ b/tryton/trytond/trytond/tools/email_.py
@@ -2,6 +2,12 @@
 # this repository contains the full copyright notices and license terms.
 from email.utils import parseaddr

+from trytond.pool import Pool
+
+__all__ = [
+    'set_from_header', 'validate_email', 'normalize_email',
+    'convert_ascii_email', 'EmailNotValidError']
+

 def _domainaddr(address):
     _, email = parseaddr(address)
@@ -21,3 +27,49 @@ def set_from_header(message, sender, from_):
             message['Reply-To'] = from_
     else:
         message['From'] = from_
+
+
+try:
+    from email_validator import EmailNotValidError, caching_resolver
+    from email_validator import validate_email as _validate_email
+
+    resolver = caching_resolver()
+
+    def validate_email(email):
+        emailinfo = _validate_email(
+            email, check_deliverability=True,
+            dns_resolver=resolver,
+            test_environment=Pool.test)
+        return emailinfo.normalized
+
+    def normalize_email(email):
+        try:
+            emailinfo = _validate_email(
+                email, check_deliverability=False,
+                test_environment=Pool.test)
+            return emailinfo.normalized
+        except EmailNotValidError:
+            return email
+
+    def convert_ascii_email(email):
+        try:
+            emailinfo = _validate_email(
+                email, check_deliverability=False,
+                test_environment=Pool.test)
+            return emailinfo.ascii_email
+        except EmailNotValidError:
+            return email
+
+except ImportError:
+
+    def validate_email(email):
+        return email
+
+    def normalize_email(email):
+        return email
+
+    def convert_ascii_email(email):
+        return email
+
+    class EmailNotValidError(Exception):
+        pass