diff --git a/packages/nc-gui/components/auth/userManagement.vue b/packages/nc-gui/components/auth/userManagement.vue
index da1ba72d47..ed7630c549 100644
--- a/packages/nc-gui/components/auth/userManagement.vue
+++ b/packages/nc-gui/components/auth/userManagement.vue
@@ -453,6 +453,7 @@
 import SetListCheckboxCell from "@/components/project/spreadsheet/editableCell/setListCheckboxCell";
 import {enumColor as colors, enumColor} from "@/components/project/spreadsheet/helpers/colors";
 import DlgLabelSubmitCancel from "@/components/utils/dlgLabelSubmitCancel";
+import {isEmail} from "@/helpers";
 
 export default {
   name: "user-management",
@@ -475,7 +476,7 @@ export default {
     valid: null,
     emailRules: [
       v => !!v || 'E-mail is required',
-      v => /^(([^<>()[\]\.,;:\s@\"]+(\.[^<>()[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()[\]\.,;:\s@\"]+\.)+[^<>()[\]\.,;:\s@\"]{2,})$/i.test(v) || 'E-mail must be valid'
+      v => isEmail(v) || 'E-mail must be valid'
     ],
     userList: []
   }),
diff --git a/packages/nc-gui/helpers/index.js b/packages/nc-gui/helpers/index.js
new file mode 100644
index 0000000000..a58c35248a
--- /dev/null
+++ b/packages/nc-gui/helpers/index.js
@@ -0,0 +1,24 @@
+export const isEmail = v => /^(([^<>()[\]\.,;:\s@\"]+(\.[^<>()[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()[\]\.,;:\s@\"]+\.)+[^<>()[\]\.,;:\s@\"]{2,})$/i.test(v)
+
+/**
+ * @copyright Copyright (c) 2021, Xgene Cloud Ltd
+ *
+ * @author Naveen MR <oof1lab@gmail.com>
+ * @author Pranav C Balan <pranavxc@gmail.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
diff --git a/packages/nc-gui/pages/user/authentication/signin.vue b/packages/nc-gui/pages/user/authentication/signin.vue
index 53d639f9e5..9a8d8e3dd1 100644
--- a/packages/nc-gui/pages/user/authentication/signin.vue
+++ b/packages/nc-gui/pages/user/authentication/signin.vue
@@ -63,8 +63,9 @@
                 <!-- Forgot your password -->
                 <p class="accent--text text-right caption font-weight-light">
                   <router-link to="/user/password/forgot">{{
-                    $t('signin.forget_password')
-                  }}</router-link>
+                      $t('signin.forget_password')
+                    }}
+                  </router-link>
                 </p>
 
                 <!--                <vue-recaptcha @verify="onNormalVerify" sitekey="6LfbcqMUAAAAAAb_2319UdF8m68JHSYVy_m4wPBx"-->
@@ -87,9 +88,9 @@
                   <b>Sign In</b>
                 </v-btn>
 
-                <br />
-                <br />
-                <br />
+                <br/>
+                <br/>
+                <br/>
                 <!-- Don't have an account ? -->
                 <p class="caption font-weight-light">
                   {{ $t('signin.footer_text_1') }}
@@ -199,7 +200,7 @@
               </v-form>
 
               <template v-else>
-                <br />
+                <br/>
                 <v-alert type="warning" outlined icon="mdi-alert">
                   <!--                <v-icon color="warning">mdi-alert</v-icon>-->
                   Authentication not configured in configuration
@@ -209,7 +210,7 @@
           </v-col>
         </v-row>
 
-        <br />
+        <br/>
       </v-col>
     </v-row>
   </v-container>
@@ -221,8 +222,9 @@ import Vue from 'vue';
 // const {shell} = require("electron").remote.require(
 //   "./libs"
 // );
-import { mapGetters, mapActions } from 'vuex';
-import { VueReCaptcha } from 'vue-recaptcha-v3';
+import {mapGetters, mapActions} from 'vuex';
+import {VueReCaptcha} from 'vue-recaptcha-v3';
+import {isEmail} from "@/helpers";
 // import VueRecaptcha from 'vue-recaptcha';
 
 export default {
@@ -243,8 +245,7 @@ export default {
           // E-mail is required
           (v) => !!v || this.$t('signin.form.rules.email_1'),
           // E-mail must be valid
-          (v) =>
-            /^\w+([.-]?\w+)*@\w+([.-]?\w+)*(\.\w{2,3})+$/.test(v) ||
+          (v) => isEmail(v) ||
             this.$t('signin.form.rules.email_2'),
         ],
         password: [
@@ -301,7 +302,7 @@ export default {
           // await this.$recaptchaLoaded()
           // const recaptchaToken = await this.$recaptcha('login')
 
-          err = await this.$store.dispatch('users/ActSignIn', { ...this.form }); //, recaptchaToken});
+          err = await this.$store.dispatch('users/ActSignIn', {...this.form}); //, recaptchaToken});
           if (err) {
             this.formUtil.formErr = true;
             this.formUtil.formErrMsg = err.data.msg;
@@ -364,20 +365,24 @@ export default {
       );
     },
   },
-  beforeCreated() {},
+  beforeCreated() {
+  },
   async created() {
     // this.type = (await this.$store.dispatch('users/ActGetAuthType')).type;
     if (this.$route.query && this.$route.query.error) {
       this.$nextTick(() =>
         this.$toast.error(this.$route.query.error).goAway(5000)
       );
-      this.$router.replace({ path: '/user/authentication/signin' });
+      this.$router.replace({path: '/user/authentication/signin'});
     }
   },
-  mounted() {},
-  beforeDestroy() {},
-  destroy() {},
-  validate({ params }) {
+  mounted() {
+  },
+  beforeDestroy() {
+  },
+  destroy() {
+  },
+  validate({params}) {
     return true;
   },
   head() {
@@ -423,4 +428,4 @@ export default {
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  *
  */
--->
\ No newline at end of file
+-->
diff --git a/packages/nc-gui/pages/user/authentication/signup/index.vue b/packages/nc-gui/pages/user/authentication/signup/index.vue
index 5ded8e6b91..66ca8e609f 100644
--- a/packages/nc-gui/pages/user/authentication/signup/index.vue
+++ b/packages/nc-gui/pages/user/authentication/signup/index.vue
@@ -205,6 +205,7 @@
 //   "./libs"
 // );
 import {mapGetters, mapActions} from 'vuex'
+import {isEmail} from "@/helpers";
 // import VueRecaptcha from 'vue-recaptcha';
 
 export default {
@@ -229,7 +230,7 @@ export default {
         email: [
           v => !!v || 'E-mail is required',
           // ref : https://stackoverflow.com/a/46181
-          v => /^(([^<>()[\]\.,;:\s@\"]+(\.[^<>()[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()[\]\.,;:\s@\"]+\.)+[^<>()[\]\.,;:\s@\"]{2,})$/i.test(v) || 'E-mail must be valid'
+          v => isEmail(v) || 'E-mail must be valid'
         ],
         password: [
           v => (this.PasswordValidate(v)) || this.passwordValidateMsg
@@ -340,7 +341,7 @@ export default {
 
     async MtdOnSignup(e) {
       e.preventDefault();
-      
+
       this.signUpButtonLoading = true;
 
       if (this.type === 'jwt') {