With the Mailchimp for WooCommerce integration, your customers and their purchase data are synced with your Mailchimp account, making it easy to automatically follow up with customers post-purchase, recommend products, recover abandoned carts, and measure the ROI of your marketing efforts.
Typeform is a very user-friendly form and survey builder. The design is clean and the features are smart: You can customize your survey in different ways, and you can also create lots of clever interactions using features like "logic jumps" which create unique paths of questions based on answers.
Klarna gives your customers flexibility on payment when purchasing from your store. Customers can split their purchase into manageable installments or pay for your order up to 30 days later. The merchant cost for each purchase is up to 0.30 USD + 3.29% per transaction.