[PB-6431]: feat/add lookupRecipientKeys method and related types for recipient key lookup

package.json

@@ -1,7 +1,7 @@
 {
   "name": "@internxt/sdk",
   "author": "Internxt <hello@internxt.com>",
-  "version": "1.17.1",
+  "version": "1.17.2",
   "description": "An sdk for interacting with Internxt's services",
   "repository": {
     "type": "git",
@@ -26,7 +26,7 @@
     "lint": "eslint ./src",
     "format": "prettier --write **/*.{js,jsx,tsx,ts}",
     "swagger": "openapi-typescript && yarn format",
-    "swagger:mail": "openapi-typescript http://localhost:3100/api-json -o ./src/mail/schema.ts && yarn format"
+    "swagger:mail": "openapi-typescript --redocly redocly.mail.yaml && yarn format"
   },
   "devDependencies": {
     "@internxt/eslint-config-internxt": "^2.1.0",

redocly.mail.yaml

@@ -0,0 +1,5 @@
+apis:
+  mail:
+    root: http://localhost:3100/docs-json
+    x-openapi-ts:
+      output: ./src/mail/schema.ts

src/mail/index.ts

@@ -15,6 +15,7 @@ import {
   SearchFiltersQuery,
   MailAccountKeysResponse,
   MailAccountResponse,
+  LookupRecipientKeysResponse,
   EncryptedKeystore,
   KeystoreType,
   RecipientWithPublicKey,
@@ -155,6 +156,18 @@ export class MailApi {
     return this.client.post('/email/send', body, this.headers());
   }
 
+  /**
+   * Looks up the public encryption keys for one or more recipient addresses.
+   * For each address, returns the public key if it belongs to an active
+   * Internxt domain, or `null` for external or unknown addresses.
+   *
+   * @param addresses - 1-50 email addresses to look up
+   * @returns Recipients with their public keys (or null)
+   */
+  lookupRecipientKeys(addresses: string[]): Promise<LookupRecipientKeysResponse> {
+    return this.client.post('/email/keys/lookup', { addresses }, this.headers());
+  }
+
   /**
    * Saves a draft email
    *