diff --git a/package.json b/package.json
index d9e122c1..581563b9 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@internxt/sdk",
   "author": "Internxt <hello@internxt.com>",
-  "version": "1.17.16",
+  "version": "1.17.17",
   "description": "An sdk for interacting with Internxt's services",
   "repository": {
     "type": "git",
diff --git a/src/mail/schema.ts b/src/mail/schema.ts
index 1ed106c5..6f0fd563 100644
--- a/src/mail/schema.ts
+++ b/src/mail/schema.ts
@@ -431,7 +431,7 @@ export interface components {
     EncryptedSummaryDto: {
       /** @description Encrypted preview snippet (base64) */
       encryptedPreview: string;
-      /** @description Wrapped keys that unlock the preview, labeled per recipient; the caller picks theirs by address */
+      /** @description Wrapped session keys, labeled per recipient; the caller picks theirs by address */
       wrappedKeys: components['schemas']['EncryptedWrappedKeyDto'][];
     };
     EmailSummaryResponseDto: {
@@ -620,16 +620,16 @@ export interface components {
       recipients: components['schemas']['RecipientKeyDto'][];
     };
     EncryptionBlockDto: {
-      /** @example v2 */
+      /** @example v3 */
       version: string;
-      /** @description Encrypted body payload (base64); decrypts to JSON { body, attachmentsSessionKey } */
+      /** @description Encrypted body (base64) */
       encryptedText: string;
-      /** @description Wrapped keys that unlock the body payload, labeled per recipient */
-      wrappedKeys: components['schemas']['EncryptedWrappedKeyDto'][];
-      /** @description Encrypted preview snippet (base64), ~256 chars plaintext, sealed separately from the body */
+      /** @description Encrypted preview snippet (base64), ~256 chars plaintext, same session key as the body */
       encryptedPreview: string;
-      /** @description Wrapped keys that unlock the preview, labeled per recipient */
-      previewWrappedKeys: components['schemas']['EncryptedWrappedKeyDto'][];
+      /** @description Encrypted attachments session key (base64), same session key as the body */
+      encryptedAttachmentsSessionKey: string;
+      /** @description Wrapped session keys, labeled per recipient; one entry unlocks body, preview and attachments key */
+      wrappedKeys: components['schemas']['EncryptedWrappedKeyDto'][];
     };
     AttachmentRefDto: {
       /** @example T1a2b3c… */
@@ -696,7 +696,7 @@ export interface components {
       textBody?: string;
       /** @example <p>Still working on this…</p> */
       htmlBody?: string;
-      /** @description When present, the draft body is stored encrypted. Only the sender can decrypt it later, so wrappedKeys / previewWrappedKeys should contain a single entry built from the sender's own public key. */
+      /** @description When present, the draft body is stored encrypted. Only the sender can decrypt it later, so wrappedKeys should contain a single entry built from the sender's own public key. */
       encryption?: components['schemas']['EncryptionBlockDto'];
       attachments?: components['schemas']['AttachmentRefDto'][];
     };