diff --git a/src/core/constants/.gitkeep b/src/core/constants/.gitkeep
deleted file mode 100644
index c710e69..0000000
--- a/src/core/constants/.gitkeep
+++ /dev/null
@@ -1 +0,0 @@
-reusable components
\ No newline at end of file
diff --git a/src/shared/config/core.ts b/src/shared/config/core.ts
index ddba9d1..6b301d4 100644
--- a/src/shared/config/core.ts
+++ b/src/shared/config/core.ts
@@ -1,7 +1,7 @@
 export const CORE = {
-  MAIL_USER: process.env.MAIL_USER,
-  MAIL_PASS: process.env.MAIL_PASS,
-  MAIL_FROM: process.env.MAIL_FROM,
-  MAIL_TO: process.env.MAIL_TO,
+  MAIL_USER: process.env.NEXT_PUBLIC_MAIL_USER,
+  MAIL_PASS: process.env.NEXT_PUBLIC_MAIL_PASS,
+  MAIL_FROM: process.env.NEXT_PUBLIC_MAIL_FROM,
+  MAIL_TO: process.env.NEXT_PUBLIC_MAIL_TO,
   MAIL_SECURE_KEY: process.env.NEXT_PUBLIC_MAIL_SECURE_KEY,
 } as const;