diff --git a/README.md b/README.md
index 5317fb2..4777684 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,9 @@
 This is a replication project for the typescript version of [gpt4free](https://github.com/xtekky/gpt4free)
 
 ## Demo [GPTGOD](http://gptgod.site)
+
 ### GPTGOD Support
- 
+
 - [x] Midjourney The Most Powerful AI Drawing System in History.
 - [x] Stable Diffusion
 - [x] Claude
@@ -51,7 +52,9 @@ http_proxy=http://host:port
 # you should config this if you use forefront api, this apikey is used for receive register email
 # get api key here https://rapidapi.com/calvinloveland335703-0p6BxLYIH8f/api/temp-mail44
 rapid_api_key=xxxxxxxxxx
+EMAIL_TYPE=temp-email44 # temp email type
 DEBUG=0 # default:0 when you set 1 make sure run with chromium ui
+POOL_SIZE=1 # forefront concurrency size
 ```
 
 ```
diff --git a/model/forefront/index.ts b/model/forefront/index.ts
index 7527663..651efdb 100644
--- a/model/forefront/index.ts
+++ b/model/forefront/index.ts
@@ -59,7 +59,7 @@ export class Forefrontnew extends Chat {
         await page.waitForSelector('.cl-rootBox > .cl-card > .cl-main > .cl-form > .cl-formButtonPrimary')
         await page.click('.cl-rootBox > .cl-card > .cl-main > .cl-form > .cl-formButtonPrimary')
 
-        const emailBox = CreateEmail(TempEmailType.TempEmail44)
+        const emailBox = CreateEmail(process.env.EMAIL_TYPE as TempEmailType || TempEmailType.TempEmail44)
         const emailAddress = await emailBox.getMailAddress();
         // 将文本键入焦点元素
         await page.keyboard.type(emailAddress, {delay: 10});