• To integrate Mailchimp with WooCommerce, follow these steps:

• Install the Mailchimp for WooCommerce plugin via Plugins > Add New.

• Activate the plugin and connect your Mailchimp account using the API key.

• Sync your store data (products, customers, etc.) with Mailchimp.

• Set up automation and email campaigns directly from the Mailchimp dashboard.
  This integration simplifies email marketing and allows you to manage customer interactions and product promotions efficiently.

WooCommerce is a free WordPress plugin that turns your website into an online store. It lets you add products, set prices, manage stock, and create a secure checkout. Customers browse your shop, add items to the cart, and pay using enabled gateways like cards or PayPal. WooCommerce then records the order, sends emails, and updates order status in your dashboard. You can also set shipping rules, taxes, coupons, and refunds. With add-ons, you can add subscriptions, bookings, and other store features.

To set up Facebook Shop with WooCommerce, install and activate the Facebook for WooCommerce plugin. Go to Marketing → Facebook and follow the setup wizard. Connect your Facebook Business Manager, select your Facebook Page, create or link a product catalog, and connect your Ad Account. Once connected, WooCommerce products will automatically sync to your Facebook Shop. Customers can browse and even check out through your website or Instagram if enabled. Ensure product details are complete and comply with Facebook’s commerce policies. This setup helps boost product visibility, drive traffic from social media, and increase sales.

To integrate an SMS API in WordPress WooCommerce, first choose an SMS provider (Twilio, MSG91, Textlocal, Plivo, etc.) and get API keys, sender ID, and templates. The easiest method is a plugin. Install an SMS plugin that supports WooCommerce events like new order, processing, completed, failed, and OTP. Add your API credentials in the plugin settings and map templates for customer and admin messages. If you prefer custom code, use WooCommerce hooks like woocommerce_order_status_changed to trigger an API request with order data (name, order ID, amount). Test in sandbox, verify delivery reports, then enable live mode.

To add a product category filter in WooCommerce, you can use built-in widgets or blocks. Go to Appearance → Widgets or Appearance → Editor, depending on your theme. Add the Product Categories widget or block to your shop sidebar or filter area. Choose display options like dropdown or list, and save changes. For block-based themes, you can also use the Filter by Category block on shop pages. If you need advanced filters, install a product filter plugin. These plugins add AJAX filters, checkboxes, and mobile-friendly layouts without reloading pages.

One of the best PDF invoice plugins for WooCommerce is WooCommerce PDF Invoices & Packing Slips because it automatically generates and attaches professionally formatted PDF invoices to order emails. It supports customizable templates, sequential invoice numbering, and bulk invoice downloads. Another excellent option is PDF Invoices & Packing Slips for WooCommerce by WebToffee, which adds flexible template designs, multiple languages, and tax support. Sliced Invoices is also strong for more complex invoicing needs. The ideal plugin depends on your requirements—automatic email attachments, customization options, multi‑language support, or accounting integrations—so choose based on your store’s invoicing workflow and compliance needs.