diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 7268c53df..42b73c3f5 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -103,9 +103,9 @@ SERVER_PORT=8082
     ```
 
 3. 执行 [`db/init/init_script.sql`](backend/src/main/resources/db/init/init_script.sql) 脚本，导入基本的数据
-    管理员：**adminmail@openisle.com/123456**
-    普通用户1：**usermail1@openisle.com/123456**
-    普通用户2：**usermail2@openisle.com/123456**
+    管理员：**admin/123456**
+    普通用户1：**user1/123456**
+    普通用户2：**user2/123456**
     
     ![初始化脚本](assets/contributing/resources_img.png)
 
@@ -225,3 +225,24 @@ npm run dev
     ![github配置](assets/contributing/github_img.png)
 
     ![github配置2](assets/contributing/github_img_2.png)
+
+### 配置 Resend 邮箱服务
+
+https://resend.com/emails 创建账号并登录
+
+- `Domains` -> `Add Domain`
+  ![image-20250906150459400](assets/contributing/image-20250906150459400.png)
+
+- 填写域名
+  ![image-20250906150541817](assets/contributing/image-20250906150541817.png)
+
+- 等待一段时间后解析成功，创建 key
+  `API Keys` -> `Create API Key`，输入名称，设置 `Permission` 为 `Sending access`
+  **Key 只能查看一次，务必保存下来**
+  ![image-20250906150811572](assets/contributing/image-20250906150811572.png)
+  ![image-20250906150924975](assets/contributing/image-20250906150924975.png)
+  ![image-20250906150944130](assets/contributing/image-20250906150944130.png)
+- 修改 `.env` 配置中的 `RESEND_API_KEY` 和 `RESEND_FROM_EMAIL`
+  `RESEND_FROM_EMAIL`： **noreply@域名**
+  `RESEND_API_KEY`：**刚刚复制的 Key**
+  ![image-20250906151218330](assets/contributing/image-20250906151218330.png)
diff --git a/assets/contributing/image-20250906150459400.png b/assets/contributing/image-20250906150459400.png
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new file mode 100644
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new file mode 100644
index 000000000..46919c0ec
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new file mode 100644
index 000000000..9bc7ebc70
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diff --git a/assets/contributing/image-20250906151218330.png b/assets/contributing/image-20250906151218330.png
new file mode 100644
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diff --git a/backend/open-isle.env.example b/backend/open-isle.env.example
index 928bfc689..a62ac877f 100644
--- a/backend/open-isle.env.example
+++ b/backend/open-isle.env.example
@@ -19,6 +19,7 @@ REDIS_PORT=<Redis 端口>
 
 # === Resend ===
 RESEND_API_KEY=<你的resend-api-key>
+RESEND_FROM_EMAIL=<你的 resend 发送邮箱>
 
 # === COS ===
 # COS_BASE_URL=https://<你的cos>.cos.ap-guangzhou.myqcloud.com
diff --git a/backend/src/main/java/com/openisle/service/ResendEmailSender.java b/backend/src/main/java/com/openisle/service/ResendEmailSender.java
index fbc4663c5..ec774981d 100644
--- a/backend/src/main/java/com/openisle/service/ResendEmailSender.java
+++ b/backend/src/main/java/com/openisle/service/ResendEmailSender.java
@@ -18,6 +18,9 @@ public class ResendEmailSender extends EmailSender {
     @Value("${resend.api.key}")
     private String apiKey;
 
+    @Value("${resend.from.email}")
+    private String fromEmail;
+
     private final RestTemplate restTemplate = new RestTemplate();
 
     @Override
@@ -33,7 +36,7 @@ public class ResendEmailSender extends EmailSender {
         body.put("to", to);
         body.put("subject", subject);
         body.put("text", text);
-        body.put("from", "openisle <noreply@chenjiating.com>"); // todo(tim): use config
+        body.put("from", "openisle <" + fromEmail + ">");
 
         HttpEntity<Map<String, String>> entity = new HttpEntity<>(body, headers);
         restTemplate.exchange(url, HttpMethod.POST, entity, String.class);
diff --git a/backend/src/main/resources/application.properties b/backend/src/main/resources/application.properties
index 9f3d03125..3fed4b3c7 100644
--- a/backend/src/main/resources/application.properties
+++ b/backend/src/main/resources/application.properties
@@ -56,6 +56,7 @@ app.captcha.comment-enabled=${CAPTCHA_COMMENT_ENABLED:false}
 # ========= Optional =========
 # for resend email send service, you can improve your service by yourself
 resend.api.key=${RESEND_API_KEY:}
+resend.from.email=${RESEND.FROM.EMAIL}
 # your email services: ...
 
 # for tencent cloud image upload service, you can improve your service by yourself