diff --git a/src/controller/admin/management/settingController.ts b/src/controller/admin/management/settingController.ts
index 1a82b9a..643ba44 100644
--- a/src/controller/admin/management/settingController.ts
+++ b/src/controller/admin/management/settingController.ts
@@ -1,6 +1,8 @@
 import { Request, Response } from "express";
 import SettingHelper from "../../../helpers/settingsHelper";
 import { SettingString, SettingValueMapping } from "../../../type/settingTypes";
+import MailHelper from "../../../helpers/mailHelper";
+import InternalException from "../../../exceptions/internalException";
 
 /**
  * @description get All settings
@@ -40,7 +42,15 @@ export async function setSetting(req: Request, res: Response): Promise<any> {
   let setting = req.body.setting as SettingString;
   let value = req.body.value as string;
 
-  SettingHelper.setSetting(setting, value);
+  await SettingHelper.checkMail([{ key: setting, value }]).catch((err) => {
+    if (err == "mail") {
+      throw new InternalException("Mail is not valid");
+    } else {
+      throw new InternalException("Config is not valid");
+    }
+  });
+
+  await SettingHelper.setSetting(setting, value);
 
   res.sendStatus(204);
 }
@@ -54,8 +64,16 @@ export async function setSetting(req: Request, res: Response): Promise<any> {
 export async function setSettings<K extends SettingString>(req: Request, res: Response): Promise<any> {
   let setting = req.body as Array<{ key: K; value: SettingValueMapping[K] }>;
 
+  await SettingHelper.checkMail(setting).catch((err) => {
+    if (err == "mail") {
+      throw new InternalException("Mail is not valid");
+    } else {
+      throw new InternalException("Config is not valid");
+    }
+  });
+
   for (let entry of setting) {
-    SettingHelper.setSetting(entry.key, entry.value);
+    await SettingHelper.setSetting(entry.key, entry.value);
   }
 
   res.sendStatus(204);
@@ -92,7 +110,7 @@ export async function setImages(req: Request, res: Response): Promise<any> {
 export async function resetSetting(req: Request, res: Response): Promise<any> {
   let setting = req.params.setting as SettingString;
 
-  SettingHelper.resetSetting(setting);
+  await SettingHelper.resetSetting(setting);
 
   res.sendStatus(204);
 }
diff --git a/src/helpers/settingsHelper.ts b/src/helpers/settingsHelper.ts
index adddcc7..15b78df 100644
--- a/src/helpers/settingsHelper.ts
+++ b/src/helpers/settingsHelper.ts
@@ -14,6 +14,9 @@ import {
   UrlConverter,
 } from "./convertHelper";
 import cloneDeep from "lodash.clonedeep";
+import { rejects } from "assert";
+import InternalException from "../exceptions/internalException";
+import MailHelper from "./mailHelper";
 
 export default abstract class SettingHelper {
   private static settings: { [key in SettingString]?: string } = {};
@@ -141,6 +144,39 @@ export default abstract class SettingHelper {
     }
   }
 
+  public static async checkMail<K extends SettingString>(
+    setting: Array<{ key: K; value: SettingValueMapping[K] }>
+  ): Promise<void> {
+    return new Promise(async (resolve, reject) => {
+      if (setting.some((t) => t.key == "mail.email" && t.value != undefined)) {
+        let emailValue = setting.find((t) => t.key == "mail.email").value as string;
+        let checkMail = await MailHelper.checkMail(emailValue);
+        if (!checkMail) {
+          return reject("mail");
+        }
+      }
+
+      if (setting.some((t) => t.key.startsWith("mail"))) {
+        let checkConfig = await MailHelper.verifyTransport({
+          user:
+            (setting.find((t) => t.key == "mail.username").value as string) ??
+            SettingHelper.getSetting("mail.username"),
+          password:
+            (setting.find((t) => t.key == "mail.password").value as string) ??
+            SettingHelper.getSetting("mail.password"),
+          host: (setting.find((t) => t.key == "mail.host").value as string) ?? SettingHelper.getSetting("mail.host"),
+          port: (setting.find((t) => t.key == "mail.port").value as number) ?? SettingHelper.getSetting("mail.port"),
+          secure:
+            (setting.find((t) => t.key == "mail.secure").value as boolean) ?? SettingHelper.getSetting("mail.secure"),
+        });
+        if (!checkConfig) {
+          return reject("Config is not valid");
+        }
+      }
+      resolve();
+    });
+  }
+
   /**
    * Validates a setting
    * @param key The key of the setting