Thanks for your reply.
I am trying the plugin and there seem to be some issue.
I follow the install instructions correctly:
1) Created a folder wp-content/easyfileshop (permission 777)
2) Added a thankyou page on my site
3) Went to plugin set currency, set paypal email, set thankyou page, edited the download email >> Save Changes
4) Went to Paypal and activated "Auto Return" to the url of the 'thankyou' page.
5) Created the product post(not page) and uploaded the file from the easyfile interface >> Save Page/Update Page.
Now when the client reaches the product page and clicks on the Buy Now button, he is sent to paypal where he makes the payment and is sent to the Thankyou page. He and the owner of the site gets payment email from Paypal but the product download email never arrives. I have tried it several times. But no Download email is coming.
If you could mail me then I can show you a live preview with a purchase price of USD 0.01