Added sending email to embed metadata text

Updated test result

cps/templates/config_db.html

@@ -18,7 +18,7 @@
       </div>
       <div class="form-group required">
         <input type="checkbox" id="config_calibre_split" name="config_calibre_split" data-control="split_settings" data-t ="{{ config.config_calibre_split_dir  }}" {% if config.config_calibre_split %}checked{% endif %} >
-        <label for="config_calibre_split">{{_('Separate Book files from Library (Experimental, may lead to unexpected behavior)')}}</label>
+        <label for="config_calibre_split">{{_('Separate Book Files from Library')}}</label>
       </div>
       <div data-related="split_settings">
        <div class="form-group required input-group">

cps/templates/config_edit.html

@@ -105,7 +105,7 @@
     </div>
     <div class="form-group">
       <input type="checkbox" id="config_embed_metadata" name="config_embed_metadata" {% if config.config_embed_metadata %}checked{% endif %}>
-      <label for="config_embed_metadata">{{_('Embed Metadata to Ebook File on Download and Conversion (needs Calibre/Kepubify binaries)')}}</label>
+      <label for="config_embed_metadata">{{_('Embed Metadata to Ebook File on Download/Conversion/e-mail (needs Calibre/Kepubify binaries)')}}</label>
     </div>
     <div class="form-group">
         <input type="checkbox" id="config_uploading" data-control="upload_settings" name="config_uploading" {% if config.config_uploading %}checked{% endif %}>