diff --git a/addons/mass_mailing/views/snippets_themes.xml b/addons/mass_mailing/views/snippets_themes.xml
index 3e3ccc1889e..7e908e12033 100644
--- a/addons/mass_mailing/views/snippets_themes.xml
+++ b/addons/mass_mailing/views/snippets_themes.xml
@@ -25,7 +25,7 @@
                 <div class="o_panel_header">
                     <i class="fa fa-angle-double-up"/> Headers
                 </div>
-                <div class="o_panel_body">
+                <div class="o_panel_body" id="email_designer_header_elements">
                     <t t-snippet="mass_mailing.s_mail_block_header_social" t-thumbnail="/mass_mailing/static/src/img/blocks/block_header_social.png"/>
                     <t t-snippet="mass_mailing.s_mail_block_header_text_social" t-thumbnail="/mass_mailing/static/src/img/blocks/block_header_text_social.png"/>
                     <t t-snippet="mass_mailing.s_mail_block_header_logo" t-thumbnail="/mass_mailing/static/src/img/blocks/block_header_logo.png"/>
@@ -36,7 +36,7 @@
                 <div class="o_panel_header">
                     <i class="fa fa-clone"/> Body
                 </div>
-                <div class="o_panel_body">
+                <div class="o_panel_body" id="email_designer_body_elements">
                     <t t-snippet="mass_mailing.s_mail_block_title_text" t-thumbnail="/mass_mailing/static/src/img/blocks/block_title_text.png"/>
                     <t t-snippet="mass_mailing.s_mail_block_title_sub" t-thumbnail="/mass_mailing/static/src/img/blocks/block_title_sub.png"/>
                     <t t-snippet="mass_mailing.s_mail_block_paragraph" t-thumbnail="/mass_mailing/static/src/img/blocks/block_paragraph.png"/>
@@ -54,7 +54,7 @@
                 <div class="o_panel_header">
                     <i class="fa fa-plus"/> Marketing Content
                 </div>
-                <div class="o_panel_body">
+                <div class="o_panel_body" id="email_designer_marketing_elements">
                     <t t-snippet="mass_mailing.s_mail_block_discount2" t-thumbnail="/mass_mailing/static/src/img/blocks/block_discount2.png"/>
                     <t t-snippet="mass_mailing.s_mail_block_discount1" t-thumbnail="/mass_mailing/static/src/img/blocks/block_discount1.png"/>
                     <t t-snippet="mass_mailing.s_mail_block_event" t-thumbnail="/mass_mailing/static/src/img/blocks/block_event.png"/>
@@ -65,7 +65,7 @@
                 <div class="o_panel_header">
                     <i class="fa fa-angle-double-down"/> Footers
                 </div>
-                <div class="o_panel_body">
+                <div class="o_panel_body" id="email_designer_footer_elements">
                     <t t-snippet="mass_mailing.s_mail_block_footer_social" t-thumbnail="/mass_mailing/static/src/img/blocks/block_footer_social.png"/>
                     <t t-snippet="mass_mailing.s_mail_block_footer_social_left" t-thumbnail="/mass_mailing/static/src/img/blocks/block_footer_social_left.png"/>
                 </div>