extra carts can send existing customers a suitable product recommendation after a purchase — when consent and suitable products are present. There is nothing to set up. This page links to all the details.
The How it works page shows the installation and the first 30 minutes.
Two plans, one sentence each: Free sends 100 recommendations per billing cycle at no cost — with no billing at all; Fair costs 6% of the revenue of extra orders that demonstrably came through extra carts. Only you switch. The billing rules, the attribution, and the safeguards are on the Pricing page.
Recommendations go only to existing customers, only for genuinely similar products (the UWG §7(3) similarity check runs before every send), and only with valid marketing consent in Shopify. Per-country status is shown on the emails page. Your data stays isolated to your shop, encrypted at rest, and hosted in the EU; uninstalling deletes your customers’ personal data within 48 hours.
You see every template before it is sent. You approve the first emails yourself. You can switch tone (Sie/Du), exclude products or categories, mark pairs as “never recommend together”, allow fewer emails, or pause sending — anytime. The FAQ explains these controls in detail.
Your questions are answered by a person, not a ticket system. See Support.