chore: update mailer service port from 3003 to 4000 in documentation and configuration

Author: fruneen

docs/contribution-guide.mdx

@@ -97,7 +97,7 @@ pnpm i
 pnpm run start
 ```
 
-The **API** will work on port 3001, **WEB** on port 3002, and **Mailer** on port 3003.
+The **API** will work on port 3001, **WEB** on port 3002, and **Mailer** on port 4000.
 
 ### Deployment
 

docs/mailer.mdx

@@ -15,7 +15,7 @@ The Template type should be used to reference the available templates.  For exam
 
 ## Adding new Template
 
-All development takes place in the package turborepo `packages/mailer`. The preview of emails is launched automatically when you launch the application using turborepo or Docker, the application will be available on port 3003.
+All development takes place in the package turborepo `packages/mailer`. The preview of emails is launched automatically when you launch the application using turborepo or Docker, the application will be available on port 4000.
 
 1. Create a new template in the `emails` folder.
 2. Export your component and props interface from the file.

template/packages/mailer/README.md

@@ -16,4 +16,4 @@ Then, run the development server:
 pnpm run dev
 ```
 
-Open [localhost:3003](http://localhost:3003) with your browser to see the result.
+Open [localhost:4000](http://localhost:4000) with your browser to see the result.

template/packages/mailer/package.json

@@ -7,7 +7,7 @@
   "main": "./src/index.ts",
   "types": "./src/index.ts",
   "scripts": {
-    "dev": "email dev --port 3003",
+    "dev": "email dev --port 4000",
     "export": "email export",
     "tsc": "tsc --noEmit --watch",
     "prettier": "prettier . --write --config .prettierrc.json",