diff --git a/smtp.json b/smtp.json
index 823d8e1..5cf754a 100644
--- a/smtp.json
+++ b/smtp.json
@@ -135,7 +135,7 @@
             "read_only": false,
             "parameters": {
                 "from": {
-                    "description": "Sender Address, domain can not include 'phantom', 'splunk', or 'cisco'",
+                    "description": "Sender Address",
                     "data_type": "string",
                     "order": 0,
                     "contains": [
@@ -404,7 +404,7 @@
             "read_only": false,
             "parameters": {
                 "from": {
-                    "description": "Sender Address, domain can not include 'phantom', 'splunk', or 'cisco'",
+                    "description": "Sender Address",
                     "data_type": "string",
                     "order": 0,
                     "primary": true,
diff --git a/smtp_connector.py b/smtp_connector.py
index c600510..fef2bc1 100644
--- a/smtp_connector.py
+++ b/smtp_connector.py
@@ -232,21 +232,6 @@ def _validate_integer(self, action_result, parameter, key, allow_zero=False):
 
         return phantom.APP_SUCCESS, parameter
 
-    def _validate_sender_email(self, action_result, input_data):
-        # sender emails also have additional restriction
-        # to not include splunk related terms in the domain name
-        restricted_domains = ["splunk", "cisco", "phantom"]
-        domain = input_data.split("@")[-1].lower()
-
-        if any(restricted_domain in domain for restricted_domain in restricted_domains):
-            return action_result.set_status(
-                phantom.APP_ERROR,
-                "The domain provided in email is restricted (contains one of : splunk, cisco, phantom).\
-                    Please use a different email in the 'from' field."
-            )
-
-        return action_result.set_status(phantom.APP_SUCCESS)
-
     def _validate_email(self, input_data):
         # validations are always tricky things, making it 100% foolproof, will take a
         # very complicated regex, even multiple regexes and each could lead to a bug that
@@ -818,12 +803,6 @@ def _send_email(self, param, action_result):
         sender_address = config.get('sender_address', config.get(phantom.APP_JSON_USERNAME))
         email_from = param.get(SMTP_JSON_FROM, sender_address)
 
-        # validate sender email if inputted as a parameter
-        if action_id != "test_connectivity" and param.get(SMTP_JSON_FROM):
-            ret_val = self._validate_sender_email(action_result, email_from)
-            if phantom.is_fail(ret_val):
-                return action_result.get_status()
-
         encoding = config.get(SMTP_ENCODING, False)
         smtputf8 = config.get(SMTP_ALLOW_SMTPUTF8, False)
         body = param[SMTP_JSON_BODY]
@@ -1045,12 +1024,6 @@ def _handle_send_htmlemail(self, param):  # noqa: C901
         sender_address = config.get('sender_address', config.get(phantom.APP_JSON_USERNAME))
         email_from = param.get(SMTP_JSON_FROM, sender_address)
 
-        # validate sender email if inputted as a parameter
-        if param.get(SMTP_JSON_FROM):
-            ret_val = self._validate_sender_email(action_result, email_from)
-            if phantom.is_fail(ret_val):
-                return action_result.get_status()
-
         email_to = param['to']
         email_cc = param.get('cc')
         email_bcc = param.get('bcc')