diff --git a/packages/mailers/src/index.ts b/packages/mailers/src/index.ts
index 6765d1206..bc8cdef28 100644
--- a/packages/mailers/src/index.ts
+++ b/packages/mailers/src/index.ts
@@ -1,4 +1,9 @@
-import { Nodemailer } from './impl/nodemailer';
+import { z } from 'zod';
+
+const MAILER_ENV = z
+  .enum(['nodemailer', 'cloudflare'])
+  .default('nodemailer')
+  .parse(process.env.MAILER_ENV);
 
 /**
  * @description A mailer interface that can be implemented by any mailer.
@@ -16,4 +21,26 @@ import { Nodemailer } from './impl/nodemailer';
  *  text: 'Hello, World!'
  * });
  */
-export const Mailer = Nodemailer;
+export const Mailer = await getMailer();
+
+/**
+ * @description Get the mailer based on the environment variable.
+ */
+async function getMailer() {
+  switch (MAILER_ENV) {
+    case 'nodemailer': {
+      const { Nodemailer } = await import('./impl/nodemailer');
+
+      return new Nodemailer();
+    }
+
+    case 'cloudflare': {
+      const { CloudflareMailer } = await import('./impl/cloudflare');
+
+      return new CloudflareMailer();
+    }
+
+    default:
+      throw new Error(`Invalid mailer environment: ${MAILER_ENV as string}`);
+  }
+}