I'll bet you think ebook publishers don't need autoresponders, am I right? Well they do!
And here's why...
#1. If you publish more than one ebook, why not make up a list of your titles and call it a catalog. Then place your list on a autoresponder, then you could tell people to send a blank email to your autoresponder to get your free catalog via email.
#2. If your ebook is in EXE format, some people will be afraid to buy and/or download it. You could place a copy of any reviews you have of your ebook on a autoresponder along with a sample chapter. This way people could get a peek at your ebook contents, plus their fears would be eased by knowing that someone else has bought, downloaded and reviewed your ebook.
Let's say you use one or both of above, but still no one buys or downloads your ebook/s. Let me ask you this, "Did you send them a follow-up message?" You do know that most people need see your offer at least 3-5 times before they will make a decision. Don't you?
Well now that you know, you will need a autoresponder that can automatically follow-up for you. This way you only need to set it up once then let it do work for you.
I found a company that will not only give you free follow-up autoresponders, they will also pay you to help them give them away.