diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 850187c9dd3..92141599a9e 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -13351,7 +13351,23 @@ function show_actions_messaging($conf, $langs, $db, $filterobj, $objcon = '', $n
 				&& $actionstatic->code != 'AC_TICKET_MODIFY'
 			) {
 				$out .= '<div class="timeline-body" >';
-				$out .= $histo[$key]['message'];
+				$truncateLines = getDolGlobalInt('MAIN_TRUNCATE_TIMELINE_MESSAGE', 3);
+				$truncatedText = dolGetFirstLineOfText($histo[$key]['message'], $truncateLines);
+				if ($truncateLines > 0 && strlen($histo[$key]['message']) > strlen($truncatedText)) {
+					$out .= '<div class="readmore-block --closed" >';
+					$out .= '	<div class="readmore-block__excerpt" >';
+					$out .= 	$truncatedText ;
+					$out .= ' 	<a class="read-more-link" data-read-more-action="open" href="'.DOL_MAIN_URL_ROOT.'/comm/action/card.php?id='.$actionstatic->id.'&backtopage='.urlencode($_SERVER["PHP_SELF"].'?'.$param).'" >'.$langs->trans("ReadMore").' <span class="fa fa-chevron-right" aria-hidden="true"></span></a>';
+					$out .= '	</div>';
+					$out .= '	<div class="readmore-block__full-text" >';
+					$out .= $histo[$key]['message'];
+					$out .= ' 	<a class="read-less-link" data-read-more-action="close" href="#" ><span class="fa fa-chevron-up" aria-hidden="true"></span> '.$langs->trans("ReadLess").'</a>';
+					$out .= '	</div>';
+					$out .= '</div>';
+				} else {
+					$out .= $histo[$key]['message'];
+				}
+
 				$out .= '</div>';
 			}
 
@@ -13447,6 +13463,26 @@ function show_actions_messaging($conf, $langs, $db, $filterobj, $objcon = '', $n
 
 		$out .= "</ul>\n";
 
+		$out .= '<script>
+				jQuery(document).ready(function () {
+				   $(document).on("click", "[data-read-more-action]", function(e){
+					   let readMoreBloc = $(this).closest(".readmore-block");
+					   if(readMoreBloc.length > 0){
+							e.preventDefault();
+							if($(this).attr("data-read-more-action") == "close"){
+								readMoreBloc.addClass("--closed").removeClass("--open");
+								 $("html, body").animate({
+									scrollTop: readMoreBloc.offset().top - 200
+								}, 100);
+							}else{
+								readMoreBloc.addClass("--open").removeClass("--closed");
+							}
+					   }
+					});
+				});
+			</script>';
+
+
 		if (empty($histo)) {
 			$out .= '<span class="opacitymedium">'.$langs->trans("NoRecordFound").'</span>';
 		}
diff --git a/htdocs/langs/en_US/agenda.lang b/htdocs/langs/en_US/agenda.lang
index 70ce8809858..589f9f5a6c4 100644
--- a/htdocs/langs/en_US/agenda.lang
+++ b/htdocs/langs/en_US/agenda.lang
@@ -202,3 +202,5 @@ BookingSuccessfullyBooked=Your booking has been saved
 BookingReservationHourAfter=We confirm the reservation of our meeting at the date %s
 BookcalBookingTitle=Online appointment
 Transparency = Transparency
+ReadMore = Read more
+ReadLess = Read less
\ No newline at end of file
diff --git a/htdocs/theme/eldy/timeline.inc.php b/htdocs/theme/eldy/timeline.inc.php
index e8790738898..f4588117939 100644
--- a/htdocs/theme/eldy/timeline.inc.php
+++ b/htdocs/theme/eldy/timeline.inc.php
@@ -217,6 +217,23 @@ a.timeline-btn:hover
 	width: 100px;
 }
 
+.readmore-block.--closed .readmore-block__full-text, .readmore-block.--open .readmore-block__excerpt{
+	display: none;
+}
+
+.read-less-link, .read-more-link{
+	font-weight: bold;
+}
+
+.read-less-link{
+	display: block;
+	text-align: center;
+}
+
+
+	.read-less-link .fa, .read-more-link .fa{
+	color: inherit;
+}
 
 /* Force values for small screen 767 */
 @media only screen and (max-width: 767px)