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YandexMusic.API/Requests/Account/YGetAuthLoginLetterBuilder.cs

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+using System.Net;
+
+using YandexMusic.API.Common;
+using YandexMusic.API.Models.Account;
+using YandexMusic.API.Requests.Common;
+using YandexMusic.API.Requests.Common.Attributes;
+
+namespace YandexMusic.API.Requests.Account
+{
+    [YPassportRequest(WebRequestMethods.Http.Post, "auth/letter/status/")]
+    internal class YGetAuthLoginLetterBuilder : YRequestBuilder<YAuthLetterStatus, string>
+    {
+        public YGetAuthLoginLetterBuilder(YandexMusicApi yandex, AuthStorage auth) : base(yandex, auth)
+        {
+        }
+
+        protected override HttpContent GetContent(string tuple)
+        {
+            return new FormUrlEncodedContent(new Dictionary<string, string> {
+                { "csrf_token", storage.AuthToken.CsfrToken },
+                { "track_id", storage.AuthToken.TrackId },
+            });
+        }
+    }
+}