Kamalyon

Email Preview for WooCommerce allows you to preview any WooCommerce email (including those from WooCommerce Subscriptions) directly from the email settings page. See what your customers will receive without placing test orders.
Features: 
– Adds a “Preview Email” button to each WooCommerce email. 
– Supports WooCommerce Subscriptions email types. 
– Allows testing in safe mode without triggering real actions. 
– Uses real or mock orders and subscriptions as needed. 
– Compatible with High-Performance Order Storage (HPOS).

Email Preview for WooCommerce

Adds a preview button to all WooCommerce email templates, including support for WooCommerce Subscriptions.

Vidish

Woo Message Support allows customer to give feedback or ask queries in a most handy way. On thank you page itself, there is a section, where customers can send message to administrator. When customer sends a message to site owner, both customer & administrator will be notified for that message.
As soon as administrator receives a message from customer, he will see a red email icon in woocommerce order listing page in admin. He can read and reply to customer’s messages from there.
*** Key Features ***
<ul>
<li>Enable customers to communicate in easiest way</li>
<li>Admin can see notification when customer sends query or message</li>
<li>Admin can reply in a handy way which results in better customer satisfaction</li>
</ul>
Let your customers tell you, how you’re doing..!!
More plugins by WooExtend:
<ul>
<li><a href="https://wordpress.org/plugins/woo-combo-offers/">Woocommerce Combo Offers</a></li>
<li><a href="https://wordpress.org/plugins/woo-product-category-discount/">Product Category Discount</a></li>
<li><a href="https://wordpress.org/plugins/first-order-discount-woocommerce/">First Order Discount</a></li>
<li><a href="https://wordpress.org/plugins/woo-custom-fee/">Custom Fee</a></li>
</ul>

Woo Message Support

Woo Message Support allows customer and administrator to communicate via a message system.

Email Preview for WooCommerce vs Woo Message Support