diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/application/GiftAdminService.kt b/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/application/GiftAdminService.kt
index 9ba9ae97..a3569f59 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/application/GiftAdminService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/v2/gift/application/GiftAdminService.kt
@@ -4,6 +4,8 @@ import kr.co.vividnext.sodalive.common.SodaException
 import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftCategory
 import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftCategoryRepository
 import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftDeliveryRepository
+import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftMailbox
+import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftMailboxRepository
 import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftRepository
 import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftSizePrice
 import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftSizePriceRepository
@@ -41,6 +43,14 @@ data class GiftSizePriceCommand(
     val isActive: Boolean
 )
 
+data class GiftMailboxCommand(
+    val name: String,
+    val phoneNumber: String,
+    val zipCode: String,
+    val address: String,
+    val addressDetail: String?
+)
+
 data class GiftSizePriceResult(
     val sizeCode: GiftSize,
     val sizeName: String,
@@ -62,8 +72,31 @@ class GiftAdminService(
     private val sizePriceRepository: GiftSizePriceRepository,
     private val giftRepository: GiftRepository,
     private val giftDeliveryRepository: GiftDeliveryRepository,
+    private val giftMailboxRepository: GiftMailboxRepository,
     private val giftPushService: GiftPushService
 ) {
+    @Transactional(readOnly = true)
+    fun getMailbox(): GiftMailboxResult? = giftMailboxRepository.findByIdOrNull(GiftMailbox.SINGLETON_ID)?.toResult()
+
+    @Transactional
+    fun updateMailbox(command: GiftMailboxCommand): GiftMailboxResult {
+        validateMailbox(command)
+        val mailbox = giftMailboxRepository.findByIdOrNull(GiftMailbox.SINGLETON_ID)
+            ?: GiftMailbox(
+                name = command.name,
+                phoneNumber = command.phoneNumber,
+                zipCode = command.zipCode,
+                address = command.address,
+                addressDetail = command.addressDetail?.takeIf { it.isNotBlank() }
+            )
+        mailbox.name = command.name
+        mailbox.phoneNumber = command.phoneNumber
+        mailbox.zipCode = command.zipCode
+        mailbox.address = command.address
+        mailbox.addressDetail = command.addressDetail?.takeIf { it.isNotBlank() }
+        return giftMailboxRepository.save(mailbox).toResult()
+    }
+
     @Transactional(readOnly = true)
     fun getCategories(): List<GiftCategoryResult> = categoryRepository.findAll().map { it.toResult() }
 
@@ -198,6 +231,22 @@ class GiftAdminService(
         if (command.salePriceCan <= 0 || command.salePriceCan > command.basePriceCan) throw invalidRequest()
     }
 
+    private fun validateMailbox(command: GiftMailboxCommand) {
+        if (
+            command.name.isBlank() ||
+            command.name.length > 50 ||
+            command.phoneNumber.isBlank() ||
+            command.phoneNumber.length > 30 ||
+            command.zipCode.isBlank() ||
+            command.zipCode.length > 20 ||
+            command.address.isBlank() ||
+            command.address.length > 255 ||
+            (command.addressDetail?.length ?: 0) > 255
+        ) {
+            throw invalidRequest()
+        }
+    }
+
     private fun GiftCategory.toResult() = GiftCategoryResult(
         categoryId = id ?: throw invalidRequest(),
         classificationNumber = classificationNumber,
@@ -217,6 +266,15 @@ class GiftAdminService(
         isActive = isActive
     )
 
+    private fun GiftMailbox.toResult() = GiftMailboxResult(
+        name = name,
+        address = formatAddress(zipCode, address, addressDetail),
+        phoneNumber = phoneNumber
+    )
+
+    private fun formatAddress(zipCode: String, address: String, detail: String?) =
+        "($zipCode) $address" + if (detail.isNullOrBlank()) "" else ", $detail"
+
     private fun invalidRequest() = SodaException(messageKey = "common.error.invalid_request")
 
     private companion object {
diff --git a/src/test/kotlin/kr/co/vividnext/sodalive/v2/gift/application/GiftAdminServiceTest.kt b/src/test/kotlin/kr/co/vividnext/sodalive/v2/gift/application/GiftAdminServiceTest.kt
index 88c14e74..b003dda6 100644
--- a/src/test/kotlin/kr/co/vividnext/sodalive/v2/gift/application/GiftAdminServiceTest.kt
+++ b/src/test/kotlin/kr/co/vividnext/sodalive/v2/gift/application/GiftAdminServiceTest.kt
@@ -6,6 +6,7 @@ import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.Gift
 import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftCategoryRepository
 import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftDelivery
 import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftDeliveryRepository
+import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftMailboxRepository
 import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftRepository
 import kr.co.vividnext.sodalive.v2.gift.adapter.out.persistence.GiftSizePriceRepository
 import kr.co.vividnext.sodalive.v2.gift.domain.GiftSize
@@ -33,7 +34,8 @@ class GiftAdminServiceTest @Autowired constructor(
     private val categoryRepository: GiftCategoryRepository,
     private val sizePriceRepository: GiftSizePriceRepository,
     private val giftRepository: GiftRepository,
-    private val giftDeliveryRepository: GiftDeliveryRepository
+    private val giftDeliveryRepository: GiftDeliveryRepository,
+    private val giftMailboxRepository: GiftMailboxRepository
 ) {
     private val giftPushService = Mockito.mock(GiftPushService::class.java)
     private val service = GiftAdminService(
@@ -41,9 +43,61 @@ class GiftAdminServiceTest @Autowired constructor(
         sizePriceRepository,
         giftRepository,
         giftDeliveryRepository,
+        giftMailboxRepository,
         giftPushService
     )
 
+    @Test
+    @DisplayName("받을 주소는 미등록이면 null이고 저장 후 단일 설정으로 갱신된다")
+    fun shouldUpsertGiftMailbox() {
+        assertEquals(null, service.getMailbox())
+
+        val created = service.updateMailbox(
+            GiftMailboxCommand(
+                name = "소다라이브 선물 담당자",
+                phoneNumber = "01012345678",
+                zipCode = "06234",
+                address = "서울시 강남구",
+                addressDetail = "3층 선물 접수처"
+            )
+        )
+        val updated = service.updateMailbox(
+            GiftMailboxCommand(
+                name = "소다라이브 운영팀",
+                phoneNumber = "01087654321",
+                zipCode = "04524",
+                address = "서울시 중구",
+                addressDetail = null
+            )
+        )
+
+        assertEquals("소다라이브 선물 담당자", created.name)
+        assertEquals("(06234) 서울시 강남구, 3층 선물 접수처", created.address)
+        assertEquals("01012345678", created.phoneNumber)
+        assertEquals("소다라이브 운영팀", updated.name)
+        assertEquals("(04524) 서울시 중구", updated.address)
+        assertEquals(1, giftMailboxRepository.count())
+    }
+
+    @Test
+    @DisplayName("받을 주소 필수값이 공백이면 저장할 수 없다")
+    fun shouldRejectInvalidGiftMailbox() {
+        val exception = assertThrows(SodaException::class.java) {
+            service.updateMailbox(
+                GiftMailboxCommand(
+                    name = " ",
+                    phoneNumber = "01012345678",
+                    zipCode = "06234",
+                    address = "서울시 강남구",
+                    addressDetail = null
+                )
+            )
+        }
+
+        assertEquals("common.error.invalid_request", exception.messageKey)
+        assertEquals(0, giftMailboxRepository.count())
+    }
+
     @Test
     @DisplayName("카테고리를 등록, 수정, 논리삭제한다")
     fun shouldCreateUpdateAndDeactivateCategory() {