diff --git a/app/src/admin/api/info.ts b/app/src/admin/api/info.ts
index d3d49cd..8d0e22a 100644
--- a/app/src/admin/api/info.ts
+++ b/app/src/admin/api/info.ts
@@ -7,6 +7,7 @@ import {
   setBuyLink,
   setDocsUrl,
 } from "@/conf/env.ts";
+import { infoEvent } from "@/events/info.ts";
 
 export type SiteInfo = {
   title: string;
@@ -15,6 +16,7 @@ export type SiteInfo = {
   file: string;
   announcement: string;
   buy_link: string;
+  mail: boolean;
 };
 
 export async function getSiteInfo(): Promise<SiteInfo> {
@@ -30,6 +32,7 @@ export async function getSiteInfo(): Promise<SiteInfo> {
       file: "",
       announcement: "",
       buy_link: "",
+      mail: false,
     };
   }
 }
@@ -42,5 +45,9 @@ export function syncSiteInfo() {
     setBlobEndpoint(info.file);
     setAnnouncement(info.announcement);
     setBuyLink(info.buy_link);
+
+    infoEvent.emit({
+      mail: info.mail,
+    });
   });
 }
diff --git a/app/src/assets/ui.less b/app/src/assets/ui.less
index 6663ad5..6b6d04e 100644
--- a/app/src/assets/ui.less
+++ b/app/src/assets/ui.less
@@ -320,3 +320,7 @@ input[type="number"] {
     transform: translateY(-1px);
   }
 }
+
+.text-secondary {
+  color: hsl(var(--text-secondary)) !important;
+}
diff --git a/app/src/components/Paragraph.tsx b/app/src/components/Paragraph.tsx
index 32c0bb7..e7ef599 100644
--- a/app/src/components/Paragraph.tsx
+++ b/app/src/components/Paragraph.tsx
@@ -84,9 +84,21 @@ function ParagraphItem({
   );
 }
 
-export function ParagraphDescription({ children }: { children: string }) {
+type ParagraphDescriptionProps = {
+  children: string;
+  border?: boolean;
+};
+export function ParagraphDescription({
+  children,
+  border,
+}: ParagraphDescriptionProps) {
   return (
-    <div className={`paragraph-description`}>
+    <div
+      className={cn(
+        "paragraph-description",
+        border && `px-4 py-4 border rounded-lg`,
+      )}
+    >
       <Info size={16} />
       <Markdown children={children} />
     </div>
diff --git a/app/src/components/app/AppProvider.tsx b/app/src/components/app/AppProvider.tsx
index 5ab284c..2c504b4 100644
--- a/app/src/components/app/AppProvider.tsx
+++ b/app/src/components/app/AppProvider.tsx
@@ -19,10 +19,17 @@ import { Model } from "@/api/types.ts";
 import { ChargeProps, nonBilling } from "@/admin/charge.ts";
 import { dispatchSubscriptionData } from "@/store/globals.ts";
 import { marketEvent } from "@/events/market.ts";
+import { useEffect } from "react";
+import { infoEvent } from "@/events/info.ts";
+import { setForm } from "@/store/info.ts";
 
 function AppProvider() {
   const dispatch = useDispatch();
 
+  useEffect(() => {
+    infoEvent.bind((data) => dispatch(setForm(data)));
+  }, []);
+
   useEffectAsync(async () => {
     marketEvent.emit(false);
 
diff --git a/app/src/resources/i18n/cn.json b/app/src/resources/i18n/cn.json
index dc03c97..ce7d2c5 100644
--- a/app/src/resources/i18n/cn.json
+++ b/app/src/resources/i18n/cn.json
@@ -58,6 +58,7 @@
     "username-or-email-placeholder": "请输入用户名或邮箱",
     "code": "验证码",
     "code-placeholder": "请输入验证码",
+    "code-disabled-placeholder": "无需进行邮箱验证",
     "send-code": "发送",
     "incorrect-info": "填错信息？",
     "fall-back": "回退一步",
@@ -79,7 +80,8 @@
     "send-code-failed": "发送失败",
     "send-code-failed-prompt": "验证码发送失败，原因：{{reason}}",
     "register-success": "注册成功",
-    "register-success-prompt": "您已成功注册，欢迎你的到来！"
+    "register-success-prompt": "您已成功注册，欢迎你的到来！",
+    "disabled-mail": "当前站点的邮箱已被禁用，请联系管理员开启发件功能。"
   },
   "tag": {
     "free": "免费",
@@ -588,6 +590,7 @@
       "mailPass": "密码",
       "mailFrom": "发件人",
       "mailEnableWhitelist": "启用域名后缀白名单",
+      "mailConfNotValid": "SMTP 发件参数未正确配置，已禁用邮箱验证",
       "mailWhitelist": "域名后缀白名单",
       "mailWhitelistSelected": "已选 {{length}} 个域名邮箱",
       "mailWhitelistSearchPlaceholder": "搜索域名后缀",
diff --git a/app/src/resources/i18n/en.json b/app/src/resources/i18n/en.json
index 1176c76..22289d8 100644
--- a/app/src/resources/i18n/en.json
+++ b/app/src/resources/i18n/en.json
@@ -475,7 +475,8 @@
       "mailWhitelistSearchPlaceholder": "Search Domain Suffixes",
       "customWhitelistPlaceholder": "Please enter a list of custom domain suffixes (which will appear in the list of options to choose from), separated by commas, e.g.: example.com, example.net",
       "buyLink": "Buy Link",
-      "buyLinkPlaceholder": "Please enter the card secret purchase link, leave blank to not show the purchase button"
+      "buyLinkPlaceholder": "Please enter the card secret purchase link, leave blank to not show the purchase button",
+      "mailConfNotValid": "SMTP send parameters are not configured correctly, mailbox verification is disabled"
     },
     "user": "User Management",
     "invitation-code": "Invitation Code",
@@ -601,7 +602,9 @@
     "send-code-failed": "Send failed",
     "send-code-failed-prompt": "Failed to send verification code, reason: {{reason}}",
     "register-success": "Account created !",
-    "register-success-prompt": "You have successfully registered, welcome!"
+    "register-success-prompt": "You have successfully registered, welcome!",
+    "disabled-mail": "The mailbox of the current site has been disabled, please contact the administrator to enable the mailing function.",
+    "code-disabled-placeholder": "No email verification required"
   },
   "reset": "Reset",
   "request-error": "Request failed for {{reason}}",
diff --git a/app/src/resources/i18n/ja.json b/app/src/resources/i18n/ja.json
index 8e68111..0b0e0ff 100644
--- a/app/src/resources/i18n/ja.json
+++ b/app/src/resources/i18n/ja.json
@@ -475,7 +475,8 @@
       "mailWhitelistSearchPlaceholder": "ドメイン接尾辞を検索",
       "customWhitelistPlaceholder": "カスタムドメインサフィックスのリスト（選択するオプションのリストに表示されます）をカンマで区切って入力してください。例： example.com、example.net",
       "buyLink": "購入リンク",
-      "buyLinkPlaceholder": "カードシークレット購入リンクを入力してください。購入ボタンを表示しない場合は空白のままにしてください"
+      "buyLinkPlaceholder": "カードシークレット購入リンクを入力してください。購入ボタンを表示しない場合は空白のままにしてください",
+      "mailConfNotValid": "SMTP送信パラメータが正しく設定されていません。メールボックスの検証が無効になっています"
     },
     "user": "ユーザー管理",
     "invitation-code": "招待コード",
@@ -601,7 +602,9 @@
     "send-code-failed": "送信失敗",
     "send-code-failed-prompt": "認証コードの送信に失敗しました。理由：{{ reason}}",
     "register-success": "登録に成功しました",
-    "register-success-prompt": "登録が完了しました。ようこそ！"
+    "register-success-prompt": "登録が完了しました。ようこそ！",
+    "disabled-mail": "現在のサイトのメールボックスは無効になっています。管理者に連絡して郵送機能を有効にしてください。",
+    "code-disabled-placeholder": "メールアドレスの認証は必要ありません"
   },
   "reset": "リセット",
   "request-error": "{{reason}}のためにリクエストできませんでした",
diff --git a/app/src/resources/i18n/ru.json b/app/src/resources/i18n/ru.json
index 67361c1..6cc8c53 100644
--- a/app/src/resources/i18n/ru.json
+++ b/app/src/resources/i18n/ru.json
@@ -475,7 +475,8 @@
       "mailWhitelistSearchPlaceholder": "Поиск суффиксов доменов",
       "customWhitelistPlaceholder": "Введите список пользовательских суффиксов домена (которые появятся в списке опций на выбор), разделенных запятыми, например: example.com, example.net",
       "buyLink": "Ссылка на покупку",
-      "buyLinkPlaceholder": "Введите ссылку на секретную покупку карты, оставьте поле пустым, чтобы не показывать кнопку покупки"
+      "buyLinkPlaceholder": "Введите ссылку на секретную покупку карты, оставьте поле пустым, чтобы не показывать кнопку покупки",
+      "mailConfNotValid": "Параметры отправки SMTP настроены неправильно, проверка почтового ящика отключена"
     },
     "user": "Управление пользователями",
     "invitation-code": "Код приглашения",
@@ -601,7 +602,9 @@
     "send-code-failed": "Не удалось отправить",
     "send-code-failed-prompt": "Не удалось отправить код подтверждения, причина: {{reason}}",
     "register-success": "Регистрация прошла успешно",
-    "register-success-prompt": "Вы успешно зарегистрировались, добро пожаловать!"
+    "register-success-prompt": "Вы успешно зарегистрировались, добро пожаловать!",
+    "disabled-mail": "Почтовый ящик текущего сайта отключен. Чтобы включить функцию рассылки, обратитесь к администратору.",
+    "code-disabled-placeholder": "Подтверждение адреса электронной почты не требуется"
   },
   "reset": "сброс",
   "request-error": "Запрос не выполнен по {{reason}}",
diff --git a/app/src/routes/Forgot.tsx b/app/src/routes/Forgot.tsx
index 927e9da..4dc17b3 100644
--- a/app/src/routes/Forgot.tsx
+++ b/app/src/routes/Forgot.tsx
@@ -11,14 +11,20 @@ import Require, {
   LengthRangeRequired,
   SameRequired,
 } from "@/components/Require.tsx";
+import { Alert, AlertDescription } from "@/components/ui/alert";
 import { Input } from "@/components/ui/input.tsx";
 import { Button } from "@/components/ui/button.tsx";
 import TickButton from "@/components/TickButton.tsx";
 import { appLogo } from "@/conf/env.ts";
+import { useSelector } from "react-redux";
+import { infoMailSelector } from "@/store/info.ts";
+import { AlertCircle } from "lucide-react";
 
 function Forgot() {
   const { t } = useTranslation();
   const { toast } = useToast();
+  const enabled = useSelector(infoMailSelector);
+
   const [form, dispatch] = useReducer(formReducer<ResetForm>(), {
     email: "",
     code: "",
@@ -63,6 +69,12 @@ function Forgot() {
       <Card className={`auth-card`}>
         <CardContent className={`pb-0`}>
           <div className={`auth-wrapper`}>
+            {!enabled && (
+              <Alert className={`p-4`}>
+                <AlertCircle className={`h-4 w-4`} />
+                <AlertDescription>{t("auth.disabled-mail")}</AlertDescription>
+              </Alert>
+            )}
             <Label>
               <Require />
               {t("auth.email")}
@@ -99,6 +111,7 @@ function Forgot() {
                 loading={true}
                 onClick={onVerify}
                 tick={60}
+                disabled={!enabled}
               >
                 {t("auth.send-code")}
               </TickButton>
@@ -144,7 +157,12 @@ function Forgot() {
               }
             />
 
-            <Button onClick={onSubmit} className={`mt-2`} loading={true}>
+            <Button
+              disabled={!enabled}
+              onClick={onSubmit}
+              className={`mt-2`}
+              loading={true}
+            >
               {t("reset")}
             </Button>
           </div>
diff --git a/app/src/routes/Register.tsx b/app/src/routes/Register.tsx
index 541b260..58a7029 100644
--- a/app/src/routes/Register.tsx
+++ b/app/src/routes/Register.tsx
@@ -15,8 +15,9 @@ import { doRegister, RegisterForm, sendCode } from "@/api/auth.ts";
 import { useToast } from "@/components/ui/use-toast.ts";
 import TickButton from "@/components/TickButton.tsx";
 import { validateToken } from "@/store/auth.ts";
-import { useDispatch } from "react-redux";
+import { useDispatch, useSelector } from "react-redux";
 import { appLogo, appName } from "@/conf/env.ts";
+import { infoMailSelector } from "@/store/info.ts";
 
 type CompProps = {
   form: RegisterForm;
@@ -128,10 +129,13 @@ function Verify({ form, dispatch, setNext }: CompProps) {
   const { toast } = useToast();
   const globalDispatch = useDispatch();
 
+  const mail = useSelector(infoMailSelector);
+
   const onSubmit = async () => {
     const data = doFormat(form);
 
-    if (!isEmailValid(data.email) || !data.code.trim().length) return;
+    if (!isEmailValid(data.email)) return;
+    if (mail && data.code.trim().length === 0) return;
 
     const resp = await doRegister(data);
     if (!resp.status) {
@@ -177,7 +181,12 @@ function Verify({ form, dispatch, setNext }: CompProps) {
 
       <div className={`flex flex-row`}>
         <Input
-          placeholder={t("auth.code-placeholder")}
+          disabled={!mail}
+          placeholder={
+            mail
+              ? t("auth.code-placeholder")
+              : t("auth.code-disabled-placeholder")
+          }
           value={form.code}
           onChange={(e) =>
             dispatch({
@@ -191,6 +200,7 @@ function Verify({ form, dispatch, setNext }: CompProps) {
           loading={true}
           onClick={onVerify}
           tick={60}
+          disabled={!mail}
         >
           {t("auth.send-code")}
         </TickButton>
diff --git a/app/src/routes/admin/System.tsx b/app/src/routes/admin/System.tsx
index 7c4363b..c25c3da 100644
--- a/app/src/routes/admin/System.tsx
+++ b/app/src/routes/admin/System.tsx
@@ -238,6 +238,19 @@ function Mail({ data, dispatch, onChange }: CompProps<MailState>) {
 
   const [mailDialog, setMailDialog] = useState<boolean>(false);
 
+  const valid = useMemo((): boolean => {
+    return (
+      data.host.length > 0 &&
+      data.port > 0 &&
+      data.port < 65535 &&
+      data.username.length > 0 &&
+      data.password.length > 0 &&
+      data.from.length > 0 &&
+      /\w+@\w+\.\w+/.test(data.from) &&
+      !data.username.includes("@")
+    );
+  }, [data]);
+
   const onTest = async () => {
     if (!email.trim()) return;
     await onChange(false);
@@ -262,6 +275,11 @@ function Mail({ data, dispatch, onChange }: CompProps<MailState>) {
       configParagraph={true}
       isCollapsed={true}
     >
+      {!valid && (
+        <ParagraphDescription border={true}>
+          {t("admin.system.mailConfNotValid")}
+        </ParagraphDescription>
+      )}
       <ParagraphItem>
         <Label>
           <Require /> {t("admin.system.mailHost")}
diff --git a/app/src/store/index.ts b/app/src/store/index.ts
index 9e95ca1..5dfe800 100644
--- a/app/src/store/index.ts
+++ b/app/src/store/index.ts
@@ -1,4 +1,5 @@
 import { configureStore } from "@reduxjs/toolkit";
+import infoReducer from "./info";
 import globalReducer from "./globals";
 import menuReducer from "./menu";
 import authReducer from "./auth";
@@ -13,6 +14,7 @@ import settingsReducer from "./settings";
 
 const store = configureStore({
   reducer: {
+    info: infoReducer,
     global: globalReducer,
     menu: menuReducer,
     auth: authReducer,
diff --git a/app/src/store/info.ts b/app/src/store/info.ts
new file mode 100644
index 0000000..1b4b341
--- /dev/null
+++ b/app/src/store/info.ts
@@ -0,0 +1,23 @@
+import { createSlice } from "@reduxjs/toolkit";
+import { InfoForm } from "@/events/info.ts";
+import { RootState } from "@/store/index.ts";
+
+export const infoSlice = createSlice({
+  name: "info",
+  initialState: {
+    mail: false,
+  } as InfoForm,
+  reducers: {
+    setForm: (state, action) => {
+      const form = action.payload as InfoForm;
+      state.mail = form.mail ?? false;
+    },
+  },
+});
+
+export const { setForm } = infoSlice.actions;
+
+export default infoSlice.reducer;
+
+export const infoDataSelector = (state: RootState): InfoForm => state.info;
+export const infoMailSelector = (state: RootState): boolean => state.info.mail;
diff --git a/auth/auth.go b/auth/auth.go
index 62493e2..c2d2568 100644
--- a/auth/auth.go
+++ b/auth/auth.go
@@ -106,11 +106,13 @@ func SignUp(c *gin.Context, form RegisterForm) (string, error) {
 	email := strings.TrimSpace(form.Email)
 	code := strings.TrimSpace(form.Code)
 
+	enableVerify := channel.SystemInstance.IsMailValid()
+
 	if !utils.All(
 		validateUsername(username),
 		validatePassword(password),
 		validateEmail(email),
-		validateCode(code),
+		!enableVerify || validateCode(code),
 	) {
 		return "", errors.New("invalid username/password/email format")
 	}
@@ -127,7 +129,7 @@ func SignUp(c *gin.Context, form RegisterForm) (string, error) {
 		return "", fmt.Errorf("email is already taken, please try another one email (your current email: %s)", email)
 	}
 
-	if !checkCode(c, cache, email, code) {
+	if enableVerify && !checkCode(c, cache, email, code) {
 		return "", errors.New("invalid email verification code")
 	}
 
diff --git a/auth/controller.go b/auth/controller.go
index 52dbbd0..edcdb47 100644
--- a/auth/controller.go
+++ b/auth/controller.go
@@ -12,7 +12,7 @@ type RegisterForm struct {
 	Username string `form:"username" binding:"required"`
 	Password string `form:"password" binding:"required"`
 	Email    string `form:"email" binding:"required"`
-	Code     string `form:"code" binding:"required"`
+	Code     string `form:"code"`
 }
 
 type VerifyForm struct {
diff --git a/channel/system.go b/channel/system.go
index 2fea933..1980274 100644
--- a/channel/system.go
+++ b/channel/system.go
@@ -15,6 +15,7 @@ type ApiInfo struct {
 	Docs         string `json:"docs"`
 	Announcement string `json:"announcement"`
 	BuyLink      string `json:"buy_link"`
+	Mail         bool   `json:"mail"`
 }
 
 type generalState struct {
@@ -87,6 +88,7 @@ func (c *SystemConfig) AsInfo() ApiInfo {
 		Docs:         c.General.Docs,
 		Announcement: c.Site.Announcement,
 		BuyLink:      c.Site.BuyLink,
+		Mail:         c.IsMailValid(),
 	}
 }
 
diff --git a/middleware/throttle.go b/middleware/throttle.go
index 2773b97..258f63d 100644
--- a/middleware/throttle.go
+++ b/middleware/throttle.go
@@ -22,7 +22,7 @@ func (l *Limiter) RateLimit(client *redis.Client, ip string, path string) bool {
 
 var limits = map[string]Limiter{
 	"/login":        {Duration: 10, Count: 20},
-	"/register":     {Duration: 120, Count: 10},
+	"/register":     {Duration: 600, Count: 5},
 	"/verify":       {Duration: 120, Count: 5},
 	"/reset":        {Duration: 120, Count: 10},
 	"/apikey":       {Duration: 1, Count: 2},