E-Commerce Site for digital products

I need a full-featured e-commerce website focused on selling digital products only. While the form asked me to name a platform, I indicated “Digital products” because my top priority is choosing the stack that handles instant file delivery, secure payments, and licence management smoothly. I’m happy to hear your recommendation—whether that ends up being Shopify, WooCommerce, Magento, or another solution that better suits downloadable goods.

Key objectives
• Clean, modern storefront that highlights each product’s preview, description, and file size.
• Secure checkout with major card options and at least one globally recognised payment gateway.
• Automated delivery: as soon as payment clears, the customer receives an email with a unique download link.
• Basic customer account area so buyers can log in, redownload purchases, and see their order history.
• Mobile-first performance, SEO-friendly structure, and straightforward admin panel so I can add new digital assets myself.

Please outline which platform you’d use, the main plugins or apps you’d rely on, and a realistic timeline from kickoff to launch. If you have sample stores (especially those selling downloadable content), include them so I can gauge fit. I’m ready to start as soon as we agree on the approach.