public async Task Handle(RetryMail command, IAggregateRepository repository)
{
var mail = new Mail();
var load = await repository.Get();
mail.LoadFromHistory(load.List);
mail.RetryMail();
await repository.Update(mail.RaiseNewEvents(), load.LastEventNumber);
await mail.SendMail(this.mailService);
await repository.Update(mail.RaiseNewEvents());
}