diff --git a/src/libneochat/neochatconnection.cpp b/src/libneochat/neochatconnection.cpp
index 81d9b3f2b..fcd9edf5d 100644
--- a/src/libneochat/neochatconnection.cpp
+++ b/src/libneochat/neochatconnection.cpp
@@ -62,6 +62,9 @@ void NeoChatConnection::connectSignals()
         if (type == u"m.identity_server"_s) {
             Q_EMIT identityServerChanged();
         }
+        if (type == u"m.invite_permission_config"_s) {
+            Q_EMIT blockAllInvitesChanged();
+        }
     });
     connect(this, &NeoChatConnection::requestFailed, this, [this](BaseJob *job) {
         if (job->error() == BaseJob::UserConsentRequired) {
@@ -636,4 +639,20 @@ void NeoChatConnection::setNoteForUser(const QString &userId, const QString &not
     setAccountData(QStringLiteral("org.kde.neochat.user_note"), object);
 }
 
+bool NeoChatConnection::blockAllInvites() const
+{
+    return accountDataJson("m.invite_permission_config"_L1)["default_action"_L1].toString() == "block"_L1;
+}
+
+void NeoChatConnection::setBlockAllInvites(bool block)
+{
+    auto object = accountDataJson(QStringLiteral("m.invite_permission_config"));
+    if (block) {
+        object["default_action"_L1] = "block"_L1;
+    } else {
+        object.remove("default_action"_L1);
+    }
+    setAccountData(QStringLiteral("m.invite_permission_config"), object);
+}
+
 #include "moc_neochatconnection.cpp"
diff --git a/src/libneochat/neochatconnection.h b/src/libneochat/neochatconnection.h
index 547f96a39..e92efb557 100644
--- a/src/libneochat/neochatconnection.h
+++ b/src/libneochat/neochatconnection.h
@@ -100,6 +100,11 @@ class NeoChatConnection : public Quotient::Connection
      */
     Q_PROPERTY(bool isVerifiedSession READ isVerifiedSession NOTIFY ownSessionVerified)
 
+    /**
+     * @brief True if this account is blocking invites for all users.
+     */
+    Q_PROPERTY(bool blockAllInvites READ blockAllInvites WRITE setBlockAllInvites NOTIFY blockAllInvitesChanged)
+
 public:
     /**
      * @brief Defines the status after an attempt to change the password on an account.
@@ -244,6 +249,9 @@ public:
      */
     Q_INVOKABLE void setNoteForUser(const QString &userId, const QString &note);
 
+    bool blockAllInvites() const;
+    void setBlockAllInvites(bool block);
+
 Q_SIGNALS:
     void globalUrlPreviewEnabledChanged();
     void labelChanged();
@@ -283,6 +291,7 @@ Q_SIGNALS:
 
     void keyBackupUnlocked();
     void keyBackupError();
+    void blockAllInvitesChanged();
 
 private:
     static bool m_globalUrlPreviewDefault;
diff --git a/src/settings/NeoChatSecurityPage.qml b/src/settings/NeoChatSecurityPage.qml
index 1e87a12f6..488e4049e 100644
--- a/src/settings/NeoChatSecurityPage.qml
+++ b/src/settings/NeoChatSecurityPage.qml
@@ -87,17 +87,31 @@ FormCard.FormCardPage {
         title: i18nc("@title:group", "Invites")
     }
     FormCard.FormCard {
-        FormCard.FormCheckDelegate {
+        FormCard.FormRadioDelegate {
+            text: i18nc("@info:label", "Everyone")
+            checked: !NeoChatConfig.rejectUnknownInvites && !root.connection.blockAllInvites
+            description: i18nc("@info:description", "Anyone can send you invites.")
+        }
+
+        FormCard.FormRadioDelegate {
             id: rejectInvitationsDelegate
-            text: i18nc("@option:check", "Reject invitations from unknown users")
-            description: root.connection.canCheckMutualRooms ? i18nc("@info", "If enabled, NeoChat will reject invitations from users you don't share a room with.") : i18nc("@info", "Your server does not support this setting.")
+            text: i18nc("@option:check", "Known users")
+            description: root.connection.canCheckMutualRooms ? i18nc("@info", "Only users you share a room with can send you invites.") : i18nc("@info", "Your server does not support this setting.")
             checked: NeoChatConfig.rejectUnknownInvites
             enabled: !NeoChatConfig.isRejectUnknownInvitesImmutable && root.connection.canCheckMutualRooms
-            onToggled: {
+            onCheckedChanged: {
                 NeoChatConfig.rejectUnknownInvites = checked;
                 NeoChatConfig.save();
             }
         }
+
+        FormCard.FormRadioDelegate {
+            text: i18nc("@info:label", "No one")
+            checked: root.connection.blockAllInvites
+            enabled: root.connection.supportsMatrixSpecVersion("v1.18")
+            description: root.connection.supportsMatrixSpecVersion("v1.18") ? i18nc("@info:description", "No one can send you invites.") : i18nc("@info", "Your server does not support this setting.")
+            onCheckedChanged: root.connection.blockAllInvites = checked
+        }
     }
     FormCard.FormHeader {
         title: i18nc("@title:group", "Encryption")