diff --git a/keyserver/src/fetchers/message-fetchers.js b/keyserver/src/fetchers/message-fetchers.js
--- a/keyserver/src/fetchers/message-fetchers.js
+++ b/keyserver/src/fetchers/message-fetchers.js
@@ -6,6 +6,7 @@
   sortMessageInfoList,
   shimUnsupportedRawMessageInfos,
   isInvalidSidebarSource,
+  isUnableToBeRenderedOnItsOwn,
 } from 'lib/shared/message-utils.js';
 import { messageSpecs } from 'lib/shared/messages/message-specs.js';
 import { getNotifCollapseKey } from 'lib/shared/notif-utils.js';
@@ -890,10 +891,11 @@
   >();
   for (const message of parsedResults) {
     const { rawMessageInfo } = message;
-    if (isInvalidSidebarSource(rawMessageInfo)) {
+    if (isUnableToBeRenderedOnItsOwn(rawMessageInfo)) {
       continue;
     }
     invariant(rawMessageInfo.id, 'rawMessageInfo.id should not be null');
+    // $FlowFixMe
     rawMessageInfoMap.set(rawMessageInfo.id, rawMessageInfo);
   }
 
diff --git a/lib/shared/message-utils.js b/lib/shared/message-utils.js
--- a/lib/shared/message-utils.js
+++ b/lib/shared/message-utils.js
@@ -671,6 +671,12 @@
   return !messageSpecs[message.type].canBePinned;
 }
 
+function isUnableToBeRenderedOnItsOwn(
+  message: RawMessageInfo | MessageInfo,
+): boolean {
+  return !messageSpecs[message.type].canBeRenderedOnItsOwn;
+}
+
 export {
   localIDPrefix,
   messageKey,
@@ -702,4 +708,5 @@
   useNextLocalID,
   isInvalidSidebarSource,
   isInvalidPinSource,
+  isUnableToBeRenderedOnItsOwn,
 };