Always create mailbox with isSubscribed = true

lib/features/email/data/network/email_api.dart

@@ -111,7 +111,12 @@ class EmailAPI with HandleSetErrorMixin {
       final setMailboxMethod = SetMailboxMethod(accountId)
         ..addCreate(
             mailboxRequest.creationId,
-            Mailbox(name: mailboxRequest.newName, parentId: mailboxRequest.parentId));
+            Mailbox(
+              name: mailboxRequest.newName,
+              parentId: mailboxRequest.parentId,
+              isSubscribed: IsSubscribed(mailboxRequest.isSubscribed)
+            )
+        );
 
       requestBuilder.invocation(setMailboxMethod);
 

lib/features/mailbox/data/network/mailbox_api.dart

@@ -137,7 +137,14 @@ class MailboxAPI with HandleSetErrorMixin {
 
   Future<Mailbox?> createNewMailbox(AccountId accountId, CreateNewMailboxRequest request) async {
     final setMailboxMethod = SetMailboxMethod(accountId)
-      ..addCreate(request.creationId, Mailbox(name: request.newName, parentId: request.parentId));
+      ..addCreate(
+          request.creationId,
+          Mailbox(
+            name: request.newName,
+            isSubscribed: IsSubscribed(request.isSubscribed),
+            parentId: request.parentId
+          )
+      );
 
     final requestBuilder = JmapRequestBuilder(httpClient, ProcessingInvocation());
 

lib/features/mailbox/domain/model/create_new_mailbox_request.dart

@@ -8,9 +8,22 @@ class CreateNewMailboxRequest with EquatableMixin {
   final MailboxName newName;
   final Id creationId;
   final MailboxId? parentId;
+  final bool isSubscribed;
 
-  CreateNewMailboxRequest(this.creationId, this.newName, {this.parentId});
+  CreateNewMailboxRequest(
+    this.creationId,
+    this.newName,
+    {
+      this.parentId,
+      this.isSubscribed = true
+    }
+  );
 
   @override
-  List<Object?> get props => [creationId, newName, parentId];
+  List<Object?> get props => [
+    creationId,
+    newName,
+    parentId,
+    isSubscribed
+  ];
 }