Send invoices by email.

app/Models/Invoice.php

@@ -32,9 +32,20 @@ class Invoice extends Model
      */
     protected $appends = [
         'created',
-        'number'
+        'number',
+        'localized_state'
     ];
 
+    /**
+     * Get the invoice state as translated string.
+     *
+     * @return string
+     */
+    public function getLocalizedStateAttribute(): string
+    {
+        return __('invoice.state_' . $this->status);
+    }
+
     /**
      * Get the invoice number formatted
      */