diff --git a/app-server/subprojects/bounded_context/user/domain/src/main/kotlin/club/staircrusher/user/domain/model/User.kt b/app-server/subprojects/bounded_context/user/domain/src/main/kotlin/club/staircrusher/user/domain/model/User.kt
index 6bf1d9d5c..64a426465 100644
--- a/app-server/subprojects/bounded_context/user/domain/src/main/kotlin/club/staircrusher/user/domain/model/User.kt
+++ b/app-server/subprojects/bounded_context/user/domain/src/main/kotlin/club/staircrusher/user/domain/model/User.kt
@@ -16,7 +16,7 @@ class User(
     var nickname: String,
     @Deprecated("닉네임 로그인은 사라질 예정") var encryptedPassword: String?,
     var instagramId: String?,
-    var email: String?, // FIXME: 레거시 계정이 모두 사라지면 non-nullable로 변경
+    var email: String?,
     @Column(columnDefinition = "TEXT")
     @Convert(converter = UserMobilityToolListToTextAttributeConverter::class)
     val mobilityTools: MutableList<UserMobilityTool>,
@@ -29,6 +29,7 @@ class User(
         get() = deletedAt != null
 
     fun delete(deletedAt: Instant) {
+        this.email = null
         this.deletedAt = deletedAt
     }
 
diff --git a/app-server/subprojects/bounded_context/user/infra/src/integrationTest/kotlin/club/staircrusher/user/infra/adapter/in/controller/DeleteUserTest.kt b/app-server/subprojects/bounded_context/user/infra/src/integrationTest/kotlin/club/staircrusher/user/infra/adapter/in/controller/DeleteUserTest.kt
index 8f2ab0556..c621c1843 100644
--- a/app-server/subprojects/bounded_context/user/infra/src/integrationTest/kotlin/club/staircrusher/user/infra/adapter/in/controller/DeleteUserTest.kt
+++ b/app-server/subprojects/bounded_context/user/infra/src/integrationTest/kotlin/club/staircrusher/user/infra/adapter/in/controller/DeleteUserTest.kt
@@ -55,6 +55,7 @@ class DeleteUserTest : UserITBase() {
                 transactionManager.doInTransaction {
                     val deletedUser = userRepository.findById(user.id).get()
                     assertTrue(deletedUser.isDeleted)
+                    assertNull(deletedUser.email)
                 }
             }