public async Task SendMasterPasswordHintEmailAsync(string email, string hint)
{
var message = CreateDefaultMessage(MasterPasswordHintTemplateId);
message.Subject = "Your Master Password Hint";
message.AddTo(email);
message.AddSubstitution("{{hint}}", new List<string> { hint });
message.SetCategories(new List<string> { AdministrativeCategoryName, "Master Password Hint" });
await _web.DeliverAsync(message);
}