This extension automatically attaches a PDF copy of the invoice to the completed order email. Customers can login to their account and download previous invoices and admins can resend the PDF or download a copy
<ul class="wccom-tick-list-primary">
<li>Customizable invoice template</li>
<li>Legal company information sections like tax number etc</li>
<li>Sequential invoice numbering</li>
<li>Attach PDF to “New Order” email for admins</li>
<li>Add logo image to PDF</li>
<li>Customize date format</li>
<li>Customize invoice number format</li>
<li>Add / Remove columns from the invoice using filters</li>
<li>Invoice number column in order list</li>
<li>Resend Invoice or download invoice from the order list</li>
<li>Invoice info meta box on edit order screen</li>
</ul>
For more information on customizing the invoice template please review the <a href="https://woocommerce.com/document/woocommerce-pdf-invoice-setup-and-customization">support documents</a>.

PDF Invoices

Automatically create and attach a fully customizable PDF invoice to the completed order email.

Connect your WooCommerce store with Mailchimp’s marketing and automation tools to send personalized messages that drive repeat purchases to better engage and build relationships with your customers.
Use personalization to optimize every campaign
Mailchimp’s easy-to-use, AI-powered tools and recommendations let you design next-level emails that reflect your brand and give customers a personalized experience.
<ul>
<li style="font-weight: 400"><a href="https://mailchimp.com/help/design-an-email-new-builder/">Email Builder</a>: Send highly-targeted emails that help drive repeat purchases using intuitive drag-and-drop editors and robust automations.</li>
<li style="font-weight: 400"><a href="https://mailchimp.com/help/use-product-recommendation-content-blocks/">Product Recommendations & Dynamic Content</a>: Leverage customer behavior and purchase data to tailor content and drive conversions.</li>
<li style="font-weight: 400"><a href="https://mailchimp.com/help/use-creative-assistant/">Content Generator & Creative Assistant</a>: Harness generative AI to craft personalized content faster and test variants to deliver more personalized emails to your customers.</li>
<li style="font-weight: 400"><a href="https://mailchimp.com/help/content-optimizer/">Content Optimizer</a>: Compare your email content with top-performing campaigns and get actionable suggestions for enhancement.</li>
<li style="font-weight: 400"><a style="font-family: var(--wccom-font-family-default);letter-spacing: -0.011em" href="https://mailchimp.com/help/create-ab-tests/">AB/MV Testing</a>: Measure the impact of your content on crucial engagement and revenue metrics.</li>
</ul>
<img class="alignnone size-medium wp-image-18734003458369" src="https://woocommerce.com/wp-content/uploads/2017/09/Template-library-Gen-AI.jpg?w=896" alt="" width="896" height="672" />
Build better relationships that drive traffic and increase sales
Mailchimp offers WooCommerce merchants the right tools to drive sales and customer loyalty. Connect with customers when it matters most, turn browsers into repeat customers, and <a href="https://mailchimp.com/features/automations/?utm_source=woo_integration&utm_medium=integration_page&utm_campaign=woocommerce&utm_content=automations">send automated emails</a> and SMS based on real-time interactions like:
<ul>
<li>Abandoned cart reminders: Recover lost sales by sending reminder emails to customers who left items in their cart but didn’t complete the purchase.</li>
<li>Personalized product recommendations: Increase sales by showcasing relevant items to individual customers based on their browsing and purchase history.</li>
<li>Predictive segmentation: Sharpen your targeting strategies with predictive segmentation to understand your customers’ lifetime value, demographics, and likelihood to purchase.</li>
</ul>
<img class="alignnone size-medium wp-image-18734003667137" src="https://woocommerce.com/wp-content/uploads/2017/09/Woo-Commerce_02.png?w=896" alt="" width="896" height="504" />
Engage your visitors and convert more customers
Mailchimp tools not only help you increase traffic to your site, but with our <a href="https://mailchimp.com/features/crm/">Customer Relationship Management </a>features, you can start building stronger relationships with your customers with personalized content that means something to them.
<ul>
<li>Centralize audience insights: Get to know your audience and find new ways to market to them using Mailchimp’s <a href="https://mailchimp.com/features/crm/">CRM tools</a>. Organizing your audience with tags and segments allows for more targeted communication that can resonate with your customers, ultimately driving stronger conversion opportunities and repeat purchases.</li>
<li>Get a holistic view of your audience: Mailchimp’s <a style="font-family: var(--wccom-font-family-default);letter-spacing: -0.011em" href="https://mailchimp.com/features/audience-dashboard/">audience dashboard</a> can help you get to know your audience at a glance by visually showing segments within your audience data that you can send targeted campaigns to with just a few clicks.</li>
<li>Gain insights on how to engage with your audience: Create <a style="font-family: var(--wccom-font-family-default);letter-spacing: -0.011em" href="https://mailchimp.com/features/contact-profiles/">contact profiles</a> to  better understand your customers behind the numbers.Dive into their data and learn what actions have led to a purchase, leave notes about individual preferences, and discover patterns in audience behavior.</li>
</ul>
<img class="alignnone size-medium wp-image-18734003667144" src="https://woocommerce.com/wp-content/uploads/2017/09/Woo-Commerce_03.png?w=896" alt="" width="896" height="504" />
Get the insights you need to optimize your marketing strategy
Connect your WooCommerce store with Mailchimp’s <a href="https://mailchimp.com/features/reports-and-analytics/?utm_source=woo_integration&utm_medium=integration_page&utm_campaign=woocommerce&utm_content=reports_analytics">analytics platform </a>to monitor trends, track performance, and create better campaigns that reach more customers who are likely to engage and convert.
<ul>
<li>Make smart decisions quickly with data all in one place: Get real-time stats for all your marketing campaigns—including emails, automation, social ads, and more—to quickly identify what’s working and make informed decisions about next steps</li>
<li>Make your email content more engaging: Mailchimp’s <a href="https://mailchimp.com/features/content-optimizer/">Content Optimizer</a> gives additional guidance with analysis based on industry best practices. Access this feature in the new email builder or your email campaign reports before sending your next email.</li>
</ul>
<img class="alignnone size-medium wp-image-18734003667147" src="https://woocommerce.com/wp-content/uploads/2017/09/Woo-Commerce_04.png?w=896" alt="" width="896" height="504" />
Resource Articles
Mailchimp knows the value of providing e-commerce retailers with content that helps drive sales.  To view a library of articles to help you optimize your marketing efforts, <a href="https://mailchimp.com/resources/e-commerce/">click here</a>. 
Requirements:
<ul>
<li>The WooCommerce plugin should already be installed and activated in WordPress.</li>
<li>Your hosting environment must meet WooCommerce’s minimum requirements, including <a href="https://woocommerce.com/document/server-requirements/">PHP 7.4 or greater</a>.</li>
<li>A staging environment should be used prior to installation on production servers. Customer’s first name, last name, email address, and orders are needed for Mailchimp for WooCommerce to sync.</li>
</ul>
<h3></h3>
To connect your WooCommerce store to Mailchimp
<ol>
<li>Download the plugin</li>
<li>Install the plugin on your WordPress Admin site</li>
<li>Connect the plugin with your Mailchimp API Key</li>
<li>Configure your list settings to complete the data sync process</li>
<li>For more information on settings and configuration, visit <a href="http://kb.mailchimp.com/integrations/e-commerce/connect-or-disconnect-mailchimp-for-woocommerce">Mailchimp’s Knowledge Base</a></li>
</ol>
A note for current integration users:
This plugin supports our most powerful API 3.0 features and is intended for users who have not yet integrated their WooCommerce stores with Mailchimp. 
You can run this new integration at the same time as your current WooCommerce integration for Mailchimp. However, data from the older integration will display separately in subscriber profiles, and can’t be used with e-commerce features that require API 3.0.

Mailchimp

Increase traffic, drive repeat purchases, and send personalized emails and SMS campaigns using Mailchimp’s AI marketing tools.

PDF Invoices vs Mailchimp