How Should you distribute ebooks?

Ok, so i finally finished my ebook, and am putting the final touches on my site.

Im planning on using paypal as the main method of payment ( but accept credit cards and other things too ).

What i want to know is how do i safely send the person the ebook?

set up a custom email and at the end of every day send an email to the people who purchased?

I know it is inevitable that people will find a way to give it out free, but i want to slow that down as much as possible. I dont see anyone here on BHW wanting a free copy as it deals with the SAT essay and how to get a perfect score.

Please let me know what to do, thanks!

1. Use services like e-Junkie, which has its own complete delivery set-up to process your sales. Or become a merchant with Clickbank or Paydotcom, which offers the same. That's the big benefit of these sites, they have the product sales process and delivery already constructed, so you don't have to build one.

2. Use Tradebit, Lulu, Dealdotcom and similar trading sites to sell your e-book. Same deal, these sites have a sales and delivery portal. Trialpay also offers a payment/delivery system, in a format that allows you to offer the item for free if the customer fills out an offer.

3. If you decide you must build it yourself, put your document on a protected page (there is free software somewhere called download page protector). Email autoresponder systems like aweber and getresponse also handle delivery of e-books. Hope this helps.