You can set up your own digital shop on the Internet with the help of PayPal and Google Scripts. You upload your file on Google Drive, the buyer makes a purchase through PayPal and Google Apps Script will deliver the file to the buyer through Gmail.
See: Sell Digital Products Online
/* PayPal Shop with Apps Script */ /* Written by Amit Agarwal - ctrlq.org */ /* Add the PayPal Item Ids and Google Drive Files names here */ PAYPAL = [ ["product-001", "useful-websites-book.pdf"], ["product-002", "linux-training-course.mp4"], ["product-003", "labnol-audio-book.mp3"], ["product-004", "presentation-template.ppt"] ]; /* The script will scan your Gmail inbox every 5 minutes for PayPal emails */ function PayPal() { ScriptApp.newTrigger("myShop").timeBased().everyMinutes(5).create(); } function myShop() { var file, size, files, threads; for (var p in PAYPAL) { threads = GmailApp.search("is:unread from:paypal " + PAYPAL[p][0]); if (threads.length > 0) { /* Find the file in Google Drive */ files = DriveApp.searchFiles('title contains "' + PAYPAL[p][1] + '"'); if (files.hasNext()) { file = files.next(); size = file.getSize()/(1024*1024); for (var i=0; i20) { file.addViewer(buyer); /* For big files, share the file with the buyer */ GmailApp.sendEmail(buyer, subject, body + file.getUrl()); } else { /* Else attach the file in the email message itself */ GmailApp.sendEmail(buyer, subject, body, {attachments: file.getBlob()}); } /* Move the PayPal email to Archive and Mark it as Read */ threads[i].markRead().moveToArchive(); } } } } }