diff --git a/STCommon/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/common/interfaces/upload/UploadSession.kt b/STCommon/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/common/interfaces/upload/UploadSession.kt
index a393d67a..e8f7678a 100644
--- a/STCommon/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/common/interfaces/upload/UploadSession.kt
+++ b/STCommon/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/common/interfaces/upload/UploadSession.kt
@@ -25,6 +25,7 @@ interface UploadSession {
     val uuid: String
     val duration: ValidityPeriod get() = ValidityPeriod.THIRTY
     val authorEmail: String
+    val authorEmailToken: String?
     val password: String
     val message: String
     val numberOfDownload: DownloadLimit get() = DownloadLimit.TWO_HUNDRED_FIFTY
diff --git a/STCore/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/data/NewUploadSession.kt b/STCore/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/data/NewUploadSession.kt
index 132ddc87..880a23a4 100644
--- a/STCore/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/data/NewUploadSession.kt
+++ b/STCore/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/data/NewUploadSession.kt
@@ -27,6 +27,7 @@ import com.infomaniak.multiplatform_swisstransfer.common.models.ValidityPeriod
 data class NewUploadSession(
     override val duration: ValidityPeriod,
     override val authorEmail: String,
+    override val authorEmailToken: String?,
     override val password: String,
     override val message: String,
     override val numberOfDownload: DownloadLimit,
diff --git a/STDatabase/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/database/models/upload/UploadSessionDB.kt b/STDatabase/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/database/models/upload/UploadSessionDB.kt
index f85e5c93..5dea3b65 100644
--- a/STDatabase/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/database/models/upload/UploadSessionDB.kt
+++ b/STDatabase/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/database/models/upload/UploadSessionDB.kt
@@ -33,6 +33,7 @@ class UploadSessionDB() : UploadSession, RealmObject {
     override var uuid: String = RealmUUID.random().toString()
     private var _duration: Int = AppSettingsDB.DEFAULT_VALIDITY_PERIOD.value
     override var authorEmail: String = ""
+    override var authorEmailToken: String? = null
     override var password: String = ""
     override var message: String = ""
     private var _numberOfDownload: Int = AppSettingsDB.DEFAULT_DOWNLOAD_LIMIT.value
diff --git a/STDatabase/src/commonTest/kotlin/com/infomaniak/multiplatform_swisstransfer/database/dataset/DummyUpload.kt b/STDatabase/src/commonTest/kotlin/com/infomaniak/multiplatform_swisstransfer/database/dataset/DummyUpload.kt
index 925570f4..a38f04d4 100644
--- a/STDatabase/src/commonTest/kotlin/com/infomaniak/multiplatform_swisstransfer/database/dataset/DummyUpload.kt
+++ b/STDatabase/src/commonTest/kotlin/com/infomaniak/multiplatform_swisstransfer/database/dataset/DummyUpload.kt
@@ -44,6 +44,7 @@ object DummyUpload {
         override val uuid: String = "upload1"
         override val duration: ValidityPeriod = ValidityPeriod.THIRTY
         override val authorEmail: String = ""
+        override val authorEmailToken: String? = null
         override val password: String = ""
         override val message: String = ""
         override val numberOfDownload: DownloadLimit = DownloadLimit.ONE
diff --git a/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/models/upload/request/InitUploadBody.kt b/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/models/upload/request/InitUploadBody.kt
index a45868d0..00e2146f 100644
--- a/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/models/upload/request/InitUploadBody.kt
+++ b/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/models/upload/request/InitUploadBody.kt
@@ -28,6 +28,7 @@ import kotlinx.serialization.json.Json
 class InitUploadBody(
     val duration: String = "",
     val authorEmail: String = "",
+    val authorEmailToken: String? = null,
     val password: String = "",
     val message: String = "",
     val sizeOfUpload: Long = 0L,
@@ -43,6 +44,7 @@ class InitUploadBody(
     constructor(uploadSession: UploadSession, recaptcha: String) : this(
         duration = uploadSession.duration.value.toString(),
         authorEmail = uploadSession.authorEmail,
+        authorEmailToken = uploadSession.authorEmailToken,
         password = uploadSession.password,
         message = uploadSession.message,
         sizeOfUpload = uploadSession.files.sumOf { it.size },
diff --git a/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/requests/UploadRequest.kt b/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/requests/UploadRequest.kt
index 9a7c0c41..74d08246 100644
--- a/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/requests/UploadRequest.kt
+++ b/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/requests/UploadRequest.kt
@@ -34,13 +34,18 @@ import io.ktor.client.request.setBody
 import io.ktor.http.ContentType
 import io.ktor.http.contentType
 import io.ktor.http.isSuccess
+import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonObject
 
 internal class UploadRequest(json: Json, httpClient: HttpClient) : BaseRequest(json, httpClient) {
 
     suspend fun initUpload(initUploadBody: InitUploadBody): InitUploadResponseApi {
-        return post(url = createUrl(ApiRoutes.initUpload), initUploadBody)
+        val nullableJson = Json(json) {
+            explicitNulls = false
+        }
+        val encodedInitUploadBody = nullableJson.encodeToString(initUploadBody)
+        return post(url = createUrl(ApiRoutes.initUpload), encodedInitUploadBody)
     }
 
     suspend fun verifyEmailCode(verifyEmailCodeBody: VerifyEmailCodeBody): AuthorEmailToken {