Hi I found a cheap auto-responder for email marketing but I do not know what their deliverability rate is I am wondering what is the best and cheapest way to check if the emails I send through this service is being delilvered to the people I'm sending it too?
Well, usually if you did not receive notifications from the mail servers, that you email is not delivered for some reason, that means that your message is delivered to the recipient. But you can never be sure he have open and read it.