diff --git a/app/routes.ts b/app/routes.ts
index 6077f9a..7736766 100644
--- a/app/routes.ts
+++ b/app/routes.ts
@@ -20,4 +20,6 @@ export default [
 	route("/sitemap.xml", "routes/sitemap[.]xml.tsx"),
 	route("/robots.txt", "routes/robots[.]txt.tsx"),
 	route("/site.webmanifest", "routes/site[.]webmanifest.tsx"),
+	// 捕获所有未匹配的路径，自动跳转到首页
+	route("*", "routes/$.ts"),
 ] satisfies RouteConfig;
diff --git a/app/routes/$.ts b/app/routes/$.ts
new file mode 100644
index 0000000..f0fd809
--- /dev/null
+++ b/app/routes/$.ts
@@ -0,0 +1,6 @@
+import { redirect } from "react-router";
+
+export async function loader() {
+	// 404页面自动跳转到首页
+	return redirect("/");
+}
diff --git a/app/routes/dev.email-handler.tsx b/app/routes/dev.email-handler.tsx
index 0f542f9..c124535 100644
--- a/app/routes/dev.email-handler.tsx
+++ b/app/routes/dev.email-handler.tsx
@@ -119,12 +119,22 @@ export function meta() {
 		{ title: "开发环境邮件处理器 - Smail" },
 		{
 			name: "description",
-			content: "开发环境专用的邮件处理路由，用于模拟 Cloudflare Workers 的 email handler 功能。",
+			content:
+				"开发环境专用的邮件处理路由，用于模拟 Cloudflare Workers 的 email handler 功能。",
 		},
 		// 开发页面不应该被搜索引擎索引
-		{ name: "robots", content: "noindex, nofollow, noarchive, nosnippet, noimageindex" },
-		{ name: "googlebot", content: "noindex, nofollow, noarchive, nosnippet, noimageindex" },
-		{ name: "bingbot", content: "noindex, nofollow, noarchive, nosnippet, noimageindex" },
+		{
+			name: "robots",
+			content: "noindex, nofollow, noarchive, nosnippet, noimageindex",
+		},
+		{
+			name: "googlebot",
+			content: "noindex, nofollow, noarchive, nosnippet, noimageindex",
+		},
+		{
+			name: "bingbot",
+			content: "noindex, nofollow, noarchive, nosnippet, noimageindex",
+		},
 	];
 }
 
diff --git a/app/routes/mail.$id.tsx b/app/routes/mail.$id.tsx
index b267a8e..fbb9a60 100644
--- a/app/routes/mail.$id.tsx
+++ b/app/routes/mail.$id.tsx
@@ -163,9 +163,18 @@ export function meta({ data }: Route.MetaArgs) {
 				content: "查看您在Smail临时邮箱中收到的邮件详情。",
 			},
 			// 即使是404页面也要阻止索引
-			{ name: "robots", content: "noindex, nofollow, noarchive, nosnippet, noimageindex" },
-			{ name: "googlebot", content: "noindex, nofollow, noarchive, nosnippet, noimageindex" },
-			{ name: "bingbot", content: "noindex, nofollow, noarchive, nosnippet, noimageindex" },
+			{
+				name: "robots",
+				content: "noindex, nofollow, noarchive, nosnippet, noimageindex",
+			},
+			{
+				name: "googlebot",
+				content: "noindex, nofollow, noarchive, nosnippet, noimageindex",
+			},
+			{
+				name: "bingbot",
+				content: "noindex, nofollow, noarchive, nosnippet, noimageindex",
+			},
 		];
 	}
 
@@ -180,11 +189,23 @@ export function meta({ data }: Route.MetaArgs) {
 			content: `查看来自${email.fromAddress}的邮件"${email.subject || "无主题"}"。接收时间：${new Date(email.receivedAt).toLocaleDateString("zh-CN")}。`,
 		},
 		// 阻止搜索引擎索引邮件内容页面
-		{ name: "robots", content: "noindex, nofollow, noarchive, nosnippet, noimageindex" },
-		{ name: "googlebot", content: "noindex, nofollow, noarchive, nosnippet, noimageindex" },
-		{ name: "bingbot", content: "noindex, nofollow, noarchive, nosnippet, noimageindex" },
+		{
+			name: "robots",
+			content: "noindex, nofollow, noarchive, nosnippet, noimageindex",
+		},
+		{
+			name: "googlebot",
+			content: "noindex, nofollow, noarchive, nosnippet, noimageindex",
+		},
+		{
+			name: "bingbot",
+			content: "noindex, nofollow, noarchive, nosnippet, noimageindex",
+		},
 		// 阻止缓存
-		{ "http-equiv": "cache-control", content: "no-cache, no-store, must-revalidate" },
+		{
+			"http-equiv": "cache-control",
+			content: "no-cache, no-store, must-revalidate",
+		},
 		{ "http-equiv": "pragma", content: "no-cache" },
 		{ "http-equiv": "expires", content: "0" },
 	];