diff --git a/src/main/java/com/nextroom/nextRoomServer/dto/MailDto.java b/src/main/java/com/nextroom/nextRoomServer/dto/MailDto.java
index e7fce99..2a070c5 100644
--- a/src/main/java/com/nextroom/nextRoomServer/dto/MailDto.java
+++ b/src/main/java/com/nextroom/nextRoomServer/dto/MailDto.java
@@ -1,7 +1,7 @@
 package com.nextroom.nextRoomServer.dto;
 
 import jakarta.validation.constraints.Email;
-import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.NotBlank;
 import jakarta.validation.constraints.Size;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
@@ -16,6 +16,7 @@ public class MailDto {
     @NoArgsConstructor(force = true)
     public static class SendRequestDto {
         @NotNull(message = "이메일을 입력해 주세요.")
+        @NotBlank(message = "이메일을 입력해 주세요.")
         @Email(message = "이메일 형식이 올바르지 않습니다.")
         private String email;
     }
@@ -26,8 +27,10 @@ public static class SendRequestDto {
     @NoArgsConstructor(force = true)
     public static class VerifyRequestDto {
         @NotNull(message = "이메일을 입력해 주세요.")
+        @NotBlank(message = "이메일을 입력해 주세요.")
         @Email(message = "이메일 형식이 올바르지 않습니다.")
         private String email;
+        @NotBlank(message = "인증 코드를 입력해 주세요.")
         @Size(max = 6, min = 6, message = "인증 코드는 6자리 입니다.")
         private String code;
     }