A parcel arrives on Tuesday. The customer opens it, likes it, puts it on. By Friday she has forgotten where she bought it. If you want a review, Wednesday is the day to ask.
Most shops ask never, or ask everyone at once in a panic before Christmas.
The system watches your dispatch data from Shopify, WooCommerce or the Royal Mail and DPD tracking feed. Two days after a parcel shows as delivered, one short email goes out from your own address with a link to Google reviews or Trustpilot. One email, and no reminders unless you want them. Anyone who has already had a refund or an open support ticket is skipped.
Reviews come in. Each one, good or bad, gets a reply drafted and dropped into your inbox or a Google Sheet. The good ones get a thank-you that mentions the product by name. The bad ones get a plain, calm reply that acknowledges the problem and offers a next step, and you read it before anything is posted. A two-star review answered well on a Thursday is worth more than ten unanswered five-stars.
Once a week the best new reviews, four or five stars with an actual sentence in them, are turned into Instagram-sized images in your colours with the customer's first name and the product photo, and queued for you to approve.
This is the kind of thing we build. It runs in your own accounts. How many reviews did you get last month, and how many of them got a reply?