public async void SendMailForDeactivated(Book book, User user)
{
var emailMessageForBookActivated = new RequestMessage()
{
UserName = user.FirstName + " " + user.LastName,
BookName = book.Name,
BookId = book.Id,
UserAddress = new MailboxAddress($"{user.Email}"),
};
await _emailSenderService.SendForBookDeactivatedAsync(emailMessageForBookActivated);
}