diff --git a/database.sql b/database.sql
index 3c2feb59f1..4d444cbe50 100644
--- a/database.sql
+++ b/database.sql
@@ -1,6 +1,6 @@
 -- ------------------------------------------
 -- Friendica 2021.09-dev (Siberian Iris)
--- DB_UPDATE_VERSION 1432
+-- DB_UPDATE_VERSION 1433
 -- ------------------------------------------
 
 
@@ -332,6 +332,8 @@ CREATE TABLE IF NOT EXISTS `apcontact` (
 	`nick` varchar(255) NOT NULL DEFAULT '' COMMENT '',
 	`name` varchar(255) COMMENT '',
 	`about` text COMMENT '',
+	`xmpp` varchar(255) COMMENT 'XMPP address',
+	`matrix` varchar(255) COMMENT 'Matrix address',
 	`photo` varchar(255) COMMENT '',
 	`header` varchar(255) COMMENT 'Header picture',
 	`addr` varchar(255) COMMENT '',
diff --git a/doc/database/db_apcontact.md b/doc/database/db_apcontact.md
index 5abf60f10f..ee95d994f9 100644
--- a/doc/database/db_apcontact.md
+++ b/doc/database/db_apcontact.md
@@ -22,6 +22,8 @@ Fields
 | nick             |                                                                     | varchar(255)   | NO   |     |                     |       |
 | name             |                                                                     | varchar(255)   | YES  |     | NULL                |       |
 | about            |                                                                     | text           | YES  |     | NULL                |       |
+| xmpp             | XMPP address                                                        | varchar(255)   | YES  |     | NULL                |       |
+| matrix           | Matrix address                                                      | varchar(255)   | YES  |     | NULL                |       |
 | photo            |                                                                     | varchar(255)   | YES  |     | NULL                |       |
 | header           | Header picture                                                      | varchar(255)   | YES  |     | NULL                |       |
 | addr             |                                                                     | varchar(255)   | YES  |     | NULL                |       |
diff --git a/src/Model/APContact.php b/src/Model/APContact.php
index d0a0d0d3f6..13add7e658 100644
--- a/src/Model/APContact.php
+++ b/src/Model/APContact.php
@@ -239,6 +239,18 @@ class APContact
 
 		$apcontact['about'] = HTML::toBBCode(JsonLD::fetchElement($compacted, 'as:summary', '@value'));
 
+		$ims = JsonLD::fetchElementArray($compacted, 'vcard:hasInstantMessage');
+		if (!empty($ims)) {
+			foreach ($ims as $link) {
+				if (substr($link, 0, 5) == 'xmpp:') {
+					$apcontact['xmpp'] = substr($link, 5);
+				}
+				if (substr($link, 0, 7) == 'matrix:') {
+					$apcontact['matrix'] = substr($link, 7);
+				}
+			}
+		}
+
 		$apcontact['photo'] = JsonLD::fetchElement($compacted, 'as:icon', '@id');
 		if (is_array($apcontact['photo']) || !empty($compacted['as:icon']['as:url']['@id'])) {
 			$apcontact['photo'] = JsonLD::fetchElement($compacted['as:icon'], 'as:url', '@id');
diff --git a/src/Protocol/ActivityPub.php b/src/Protocol/ActivityPub.php
index 0f62ab5376..153ee54658 100644
--- a/src/Protocol/ActivityPub.php
+++ b/src/Protocol/ActivityPub.php
@@ -157,6 +157,8 @@ class ActivityPub
 		// $profile['keywords']
 		// $profile['location']
 		$profile['about'] = $apcontact['about'];
+		$profile['xmpp'] = $apcontact['xmpp'];
+		$profile['matrix'] = $apcontact['matrix'];
 		$profile['batch'] = $apcontact['sharedinbox'];
 		$profile['notify'] = $apcontact['inbox'];
 		$profile['poll'] = $apcontact['outbox'];
diff --git a/src/Protocol/ActivityPub/Transmitter.php b/src/Protocol/ActivityPub/Transmitter.php
index 2ca40259d5..ab23f81d84 100644
--- a/src/Protocol/ActivityPub/Transmitter.php
+++ b/src/Protocol/ActivityPub/Transmitter.php
@@ -352,6 +352,17 @@ class Transmitter
 			$data['summary'] = BBCode::convertForUriId($owner['uri-id'] ?? 0, $owner['about'], BBCode::EXTERNAL);
 		}
 
+		if (!empty($owner['xmpp']) || !empty($owner['matrix'])) {
+			$data['vcard:hasInstantMessage'] = [];
+
+			if (!empty($owner['xmpp'])) {
+				$data['vcard:hasInstantMessage'][] = 'xmpp:' . $owner['xmpp'];
+			}
+			if (!empty($owner['matrix'])) {
+				$data['vcard:hasInstantMessage'][] = 'matrix:' . $owner['matrix'];
+			}
+		}
+
 		$data['url'] = $owner['url'];
 		$data['manuallyApprovesFollowers'] = in_array($owner['page-flags'], [User::PAGE_FLAGS_NORMAL, User::PAGE_FLAGS_PRVGROUP]);
 		$data['discoverable'] = (bool)$owner['net-publish'];
diff --git a/static/dbstructure.config.php b/static/dbstructure.config.php
index 23b64860c3..f820401a19 100644
--- a/static/dbstructure.config.php
+++ b/static/dbstructure.config.php
@@ -55,7 +55,7 @@
 use Friendica\Database\DBA;
 
 if (!defined('DB_UPDATE_VERSION')) {
-	define('DB_UPDATE_VERSION', 1432);
+	define('DB_UPDATE_VERSION', 1433);
 }
 
 return [
@@ -392,6 +392,8 @@ return [
 			"nick" => ["type" => "varchar(255)", "not null" => "1", "default" => "", "comment" => ""],
 			"name" => ["type" => "varchar(255)", "comment" => ""],
 			"about" => ["type" => "text", "comment" => ""],
+			"xmpp" => ["type" => "varchar(255)", "comment" => "XMPP address"],
+			"matrix" => ["type" => "varchar(255)", "comment" => "Matrix address"],
 			"photo" => ["type" => "varchar(255)", "comment" => ""],
 			"header" => ["type" => "varchar(255)", "comment" => "Header picture"],
 			"addr" => ["type" => "varchar(255)", "comment" => ""],