Place order tracking information onto customer note emails

Places the ShipStation order tracking information from ShipStation onto Customer Note emails. Supports USPS, UPS, and FedEx.

add_action( 'woocommerce_email_header', function( $email_heading, $email ) {

	// Limit To Specific Email
	if(
		empty( $email->id )
		|| ! in_array( $email->id, [ 'customer_note' ] )
	) {
		return;
	}

	// Get Order
	$order = $email->object;
	if( ! $order ) {
		return;
	}

	// Add Links
	add_filter( 'gettext', function( $text ) use( $order ) {

		// Limit To Specific Copy
		if( $text != 'As a reminder, here are your order details:' ) {
			return $text;
		}

		// Get ShipStation Status
		global $wpdb;
		$sql = "
			SELECT comment_content
			FROM {$wpdb->comments}
			WHERE comment_post_ID = %d
			AND comment_content LIKE '%% shipped via %%'
			ORDER BY comment_ID DESC
			LIMIT 1
		";
		$order_note = $wpdb->get_var(
			$wpdb->prepare( $sql, $order->get_id() )
		);

		// Handle No Results
		if( ! $order_note ) {
			return $text;
		}

		// Get Tracking Number From String
		$words = preg_replace( "/[^A-Za-z0-9 ]/", '', $order_note );
		$words = explode( ' ', $words );
		$last_index = sizeof( $words ) - 1;
		$tracking_num = $words[$last_index];

		// Detect USPS
		if( stristr( $order_note, 'USPS' ) ) {
			$order_note = str_replace( 'USPS', '<strong>USPS</strong>', $order_note );
			$tracking_link = 'https://tools.usps.com/go/TrackConfirmAction?qtc_tLabels1';
		}

		// Detect UPS
		else if( stristr( $order_note, 'UPS' ) ) {
			$order_note = str_replace( 'UPS', '<strong>UPS</strong>', $order_note );
			$tracking_link = 'https://www.ups.com/track?loc=en_US&tracknum';
		}

		// Detect FedEx
		else if( stristr( $order_note, 'FedEx' ) ) {
			$order_note = str_replace( 'FedEx', '<strong>FedEx</strong>', $order_note );
			$tracking_link = 'https://www.fedex.com/fedextrack/?trknbr';
		}

		// Get Tracking Link
		if( empty( $tracking_link ) ) {
			return $text;
		}
		$tracking_link = sprintf(
			'<a target="_blank" href="%s=%s">%s</a>',
			$tracking_link,
			$tracking_num,
			$tracking_num
		);

		// Output Link
		printf(
			'
				<p><strong>Track your package: %s</strong></p>
				<p>%s</p>
			',
			$tracking_link,
			$text
		);

		// Return Text
		return $text;

	} );
	
}, 10, 2 );

Instructions for Place order tracking information onto customer note emails

  1. Log into a staging or locally hosted clone of your site.
  2. Install and activate Code Snippets plugin.
  3. WP Admin > Snippets > Add New
  4. Copy and paste the code from the section above.
  5. Check to ensure formatting came over properly.
  6. Customize the code as desired.
  7. Add a meaningful title.
  8. Select whether to run on front-end or back-end (or both).
  9. Click “Save and Activate”.
  10. Test your site to ensure it works.
  11. Disable if any problems, or recover.
  12. Repeat for live environment.

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License

All code snippets are licensed GPLv2 (or later) matching WordPress licensing.

Except when otherwise stated in writing the copyright holders and/or other parties provide the program as-is without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.

Disclaimer of warranty
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