- Set default preview email to be current user's email;

- Change "Preview in browser" form to autocomplete used emails.

lib/Config/Menu.php

@@ -8,6 +8,7 @@ use MailPoet\Models\CustomField;
 use MailPoet\Models\Form;
 use MailPoet\Models\Segment;
 use MailPoet\Models\Setting;
+use MailPoet\Models\Subscriber;
 use MailPoet\Newsletter\Shortcodes\ShortcodesHelper;
 use MailPoet\Settings\Hosts;
 use MailPoet\Settings\Pages;
@@ -368,6 +369,7 @@ class Menu {
     $data = array(
       'shortcodes' => ShortcodesHelper::getShortcodes(),
       'settings' => Setting::getAll(),
+      'current_wp_user' => Subscriber::getCurrentWPUser(),
       'sub_menu' => 'mailpoet-newsletters'
     );
     wp_enqueue_media();

views/newsletter/templates/components/sidebar/preview.hbs

@@ -1,16 +1,19 @@
 <div class="handlediv" title="Click to toggle"><br></div>
 <h3><%= __('Preview') %></h3>
 <div class="mailpoet_region_content">
+    <iframe name="mailpoet_save_preview_email_for_autocomplete" style="display:none" src="about:blank"></iframe>
+    <form target="mailpoet_save_preview_email_for_autocomplete" action="about:blank">
       <div class="mailpoet_form_field">
           <label>
               <%= __('Send preview to') %><br />
-            <input id="mailpoet_preview_to_email" class="mailpoet_input mailpoet_input_full" type="text" name="to_email" value="<%= settings.sender.address %>" />
+              <input id="mailpoet_preview_to_email" class="mailpoet_input mailpoet_input_full" type="text" name="to_email" value="<%= current_wp_user.email %>" autocomplete="email" />
           </label>
       </div>
 
       <div class="mailpoet_form_field">
-        <input type="button" id="mailpoet_send_preview" class="button button-primary mailpoet_button_full" value="<%= __('Send preview') %>" />
+        <input type="submit" id="mailpoet_send_preview" class="button button-primary mailpoet_button_full" value="<%= __('Send preview') %>" />
       </div>
+    </ofmr>
 
     <hr class="mailpoet_separator" />