diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Imap/ImapClient.php b/snappymail/v/0.0.0/app/libraries/MailSo/Imap/ImapClient.php
index 71ffdd160..0b75c2f84 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Imap/ImapClient.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Imap/ImapClient.php
@@ -336,13 +336,15 @@ class ImapClient extends \MailSo\Net\NetClient
 
 	/**
 	 * Test support for things like:
-	 *     IMAP4rev1 IMAP4rev2 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY
+	 *     IMAP4rev1 IMAP4rev2 ID UIDPLUS QUOTA ENABLE IDLE
+	 *     SORT SORT=DISPLAY ESEARCH ESORT SEARCHRES WITHIN
 	 *     THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND
-	 *     URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED
-	 *     I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH
-	 *     LIST-STATUS BINARY MOVE SNIPPET=FUZZY PREVIEW=FUZZY STATUS=SIZE LITERAL+ NOTIFY SPECIAL-USE
-	 *     STARTTLS AUTH= LOGIN LOGINDISABLED QUOTA
-	 *     METADATA METADATA-SERVER
+	 *     URL-PARTIAL CATENATE UNSELECT NAMESPACE CONDSTORE
+	 *     CHILDREN LIST-EXTENDED LIST-STATUS STATUS=SIZE
+	 *     I18NLEVEL=1 QRESYNC CONTEXT=SEARCH
+	 *     BINARY MOVE SNIPPET=FUZZY PREVIEW=FUZZY LITERAL+ NOTIFY
+	 *     AUTH= LOGIN LOGINDISABLED LOGIN-REFERRALS SASL-IR STARTTLS
+	 *     METADATA METADATA-SERVER SPECIAL-USE
 	 *
 	 * @throws \MailSo\RuntimeException
 	 * @throws \MailSo\Net\Exceptions\*
diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Imap/SearchCriterias.php b/snappymail/v/0.0.0/app/libraries/MailSo/Imap/SearchCriterias.php
index 926f1177f..a50d52db2 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Imap/SearchCriterias.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Imap/SearchCriterias.php
@@ -274,6 +274,17 @@ abstract class SearchCriterias
 							}
 							break;
 
+						// https://www.rfc-editor.org/rfc/rfc5032.html
+						case 'OLDER':
+						case 'YOUNGER':
+							// time interval in seconds
+							$sValue = \intval($sRawValue);
+							if (0 < $sValue && $oImapClient->hasCapability('WITHIN')) {
+								$aCriteriasResult[] = $sName;
+								$aCriteriasResult[] = $sValue;
+							}
+							break;
+
 						// https://github.com/the-djmaze/snappymail/issues/625
 						case 'READ':
 						case 'UNREAD':