diff --git a/keyserver/src/creators/account-creator.js b/keyserver/src/creators/account-creator.js
--- a/keyserver/src/creators/account-creator.js
+++ b/keyserver/src/creators/account-creator.js
@@ -26,6 +26,7 @@
 import { threadTypes } from 'lib/types/thread-types-enum.js';
 import { ServerError } from 'lib/utils/errors.js';
 import { values } from 'lib/utils/objects.js';
+import { ignorePromiseRejections } from 'lib/utils/promises.js';
 import { reservedUsernamesSet } from 'lib/utils/reserved-users.js';
 import { isValidEthereumAddress } from 'lib/utils/siwe-utils.js';
 
@@ -45,7 +46,6 @@
   fetchKnownUserInfos,
 } from '../fetchers/user-fetchers.js';
 import { verifyCalendarQueryThreadIDs } from '../responders/entry-responders.js';
-import { handleAsyncPromise } from '../responders/handlers.js';
 import { searchForUser } from '../search/users.js';
 import { createNewUserCookie, setNewSession } from '../session/cookies.js';
 import { createScriptViewer } from '../session/scripts.js';
@@ -189,7 +189,9 @@
     ...messageInfos,
   ];
 
-  handleAsyncPromise(createAndSendReservedUsernameMessage([request.username]));
+  ignorePromiseRejections(
+    createAndSendReservedUsernameMessage([request.username]),
+  );
 
   return {
     id,
@@ -287,7 +289,9 @@
   const messageDatas = [...ashoatMessageDatas, ...privateMessageDatas];
   await Promise.all([createMessages(viewer, messageDatas)]);
 
-  handleAsyncPromise(createAndSendReservedUsernameMessage([request.address]));
+  ignorePromiseRejections(
+    createAndSendReservedUsernameMessage([request.address]),
+  );
 
   return id;
 }
diff --git a/keyserver/src/creators/message-creator.js b/keyserver/src/creators/message-creator.js
--- a/keyserver/src/creators/message-creator.js
+++ b/keyserver/src/creators/message-creator.js
@@ -21,7 +21,7 @@
 import { redisMessageTypes } from 'lib/types/redis-types.js';
 import { threadPermissions } from 'lib/types/thread-permission-types.js';
 import { updateTypes } from 'lib/types/update-types-enum.js';
-import { promiseAll } from 'lib/utils/promises.js';
+import { promiseAll, ignorePromiseRejections } from 'lib/utils/promises.js';
 
 import createIDs from './id-creator.js';
 import type { UpdatesForCurrentSession } from './update-creator.js';
@@ -41,7 +41,6 @@
 import { fetchServerThreadInfos } from '../fetchers/thread-fetchers.js';
 import type { Device, PushUserInfo } from '../push/send.js';
 import { sendPushNotifs, sendRescindNotifs } from '../push/send.js';
-import { handleAsyncPromise } from '../responders/handlers.js';
 import type { Viewer } from '../session/viewer.js';
 import { earliestFocusedTimeConsideredExpired } from '../shared/focused-times.js';
 import { publisher } from '../socket/redis.js';
@@ -191,9 +190,9 @@
   if (!viewer.isScriptViewer) {
     // If we're not being called from a script, then we avoid awaiting
     // postMessageSendPromise below so that we don't delay the response to the
-    // user on external services. In that case, we use handleAsyncPromise to
-    // make sure any exceptions are caught and logged.
-    handleAsyncPromise(postMessageSendPromise);
+    // user on external services. In that case, we use ignorePromiseRejections
+    // to make sure any exceptions are caught and logged.
+    ignorePromiseRejections(postMessageSendPromise);
   }
 
   await Promise.all([
diff --git a/keyserver/src/creators/report-creator.js b/keyserver/src/creators/report-creator.js
--- a/keyserver/src/creators/report-creator.js
+++ b/keyserver/src/creators/report-creator.js
@@ -17,6 +17,7 @@
   reportTypes,
 } from 'lib/types/report-types.js';
 import { values } from 'lib/utils/objects.js';
+import { ignorePromiseRejections } from 'lib/utils/promises.js';
 import {
   sanitizeReduxReport,
   type ReduxCrashReport,
@@ -26,7 +27,6 @@
 import createMessages from './message-creator.js';
 import { dbQuery, SQL } from '../database/database.js';
 import { fetchUsername } from '../fetchers/user-fetchers.js';
-import { handleAsyncPromise } from '../responders/handlers.js';
 import { createBotViewer } from '../session/bots.js';
 import type { Viewer } from '../session/viewer.js';
 import { getAndAssertKeyserverURLFacts } from '../utils/urls.js';
@@ -78,7 +78,7 @@
     VALUES ${[row]}
   `;
   await dbQuery(query);
-  handleAsyncPromise(sendCommbotMessage(viewer, request, id));
+  ignorePromiseRejections(sendCommbotMessage(viewer, request, id));
   return { id };
 }
 
diff --git a/keyserver/src/cron/update-geoip-db.js b/keyserver/src/cron/update-geoip-db.js
--- a/keyserver/src/cron/update-geoip-db.js
+++ b/keyserver/src/cron/update-geoip-db.js
@@ -5,8 +5,7 @@
 import geoip from 'geoip-lite';
 
 import { getCommConfig } from 'lib/utils/comm-config.js';
-
-import { handleAsyncPromise } from '../responders/handlers.js';
+import { ignorePromiseRejections } from 'lib/utils/promises.js';
 
 type GeoIPLicenseConfig = { +key: string };
 async function updateGeoipDB(): Promise<void> {
@@ -56,7 +55,7 @@
 if (!cluster.isMaster) {
   process.on('message', (ipcMessage: IPCMessage) => {
     if (ipcMessage.type === 'geoip_reload') {
-      handleAsyncPromise(reloadGeoipDB());
+      ignorePromiseRejections(reloadGeoipDB());
     }
   });
 }
diff --git a/keyserver/src/deleters/account-deleters.js b/keyserver/src/deleters/account-deleters.js
--- a/keyserver/src/deleters/account-deleters.js
+++ b/keyserver/src/deleters/account-deleters.js
@@ -8,7 +8,7 @@
 import type { UserInfo } from 'lib/types/user-types.js';
 import { ServerError } from 'lib/utils/errors.js';
 import { values } from 'lib/utils/objects.js';
-import { promiseAll } from 'lib/utils/promises.js';
+import { promiseAll, ignorePromiseRejections } from 'lib/utils/promises.js';
 
 import { createUpdates } from '../creators/update-creator.js';
 import { dbQuery, SQL } from '../database/database.js';
@@ -17,7 +17,6 @@
   fetchUsername,
 } from '../fetchers/user-fetchers.js';
 import { rescindPushNotifs } from '../push/rescind.js';
-import { handleAsyncPromise } from '../responders/handlers.js';
 import { createNewAnonymousCookie } from '../session/cookies.js';
 import type { Viewer, AnonymousViewerData } from '../session/viewer.js';
 import { fetchOlmAccount } from '../updaters/olm-account-updater.js';
@@ -98,7 +97,7 @@
     };
     const message = JSON.stringify(reservedUsernameMessage);
 
-    handleAsyncPromise(
+    ignorePromiseRejections(
       (async () => {
         const rustAPI = await getRustAPI();
         const accountInfo = await fetchOlmAccount('content');
@@ -119,7 +118,7 @@
   if (viewer.isScriptViewer) {
     await deletionUpdatesPromise;
   } else {
-    handleAsyncPromise(deletionUpdatesPromise);
+    ignorePromiseRejections(deletionUpdatesPromise);
   }
 
   if (viewer.isScriptViewer) {
diff --git a/keyserver/src/keyserver.js b/keyserver/src/keyserver.js
--- a/keyserver/src/keyserver.js
+++ b/keyserver/src/keyserver.js
@@ -15,6 +15,7 @@
 import './cron/cron.js';
 import { qrCodeLinkURL } from 'lib/facts/links.js';
 import { isDev } from 'lib/utils/dev-utils.js';
+import { ignorePromiseRejections } from 'lib/utils/promises.js';
 
 import { migrate } from './database/migrations.js';
 import { jsonEndpoints } from './endpoints.js';
@@ -23,7 +24,6 @@
 import {
   jsonHandler,
   downloadHandler,
-  handleAsyncPromise,
   htmlHandler,
   uploadHandler,
 } from './responders/handlers.js';
@@ -103,7 +103,9 @@
       // We don't await here, as Tunnelbroker communication is not needed for
       // normal keyserver behavior yet. In addition, this doesn't return
       // information useful for other keyserver functions.
-      handleAsyncPromise(createAndMaintainTunnelbrokerWebsocket(identityInfo));
+      ignorePromiseRejections(
+        createAndMaintainTunnelbrokerWebsocket(identityInfo),
+      );
     } catch (e) {
       console.warn(
         'Failed identity login. Login optional until staging environment is available',
diff --git a/keyserver/src/responders/handlers.js b/keyserver/src/responders/handlers.js
--- a/keyserver/src/responders/handlers.js
+++ b/keyserver/src/responders/handlers.js
@@ -227,14 +227,6 @@
   };
 }
 
-async function handleAsyncPromise(promise: Promise<any>) {
-  try {
-    await promise;
-  } catch (error) {
-    console.warn(error);
-  }
-}
-
 export {
   createJSONResponder,
   jsonHandler,
@@ -242,5 +234,4 @@
   downloadHandler,
   htmlHandler,
   uploadHandler,
-  handleAsyncPromise,
 };
diff --git a/keyserver/src/session/cookies.js b/keyserver/src/session/cookies.js
--- a/keyserver/src/session/cookies.js
+++ b/keyserver/src/session/cookies.js
@@ -21,6 +21,7 @@
 import type { InitialClientSocketMessage } from 'lib/types/socket-types.js';
 import type { UserInfo } from 'lib/types/user-types.js';
 import { isDev } from 'lib/utils/dev-utils.js';
+import { ignorePromiseRejections } from 'lib/utils/promises.js';
 
 import {
   isBcryptHash,
@@ -33,7 +34,6 @@
 import { createSession } from '../creators/session-creator.js';
 import { dbQuery, SQL } from '../database/database.js';
 import { deleteCookie } from '../deleters/cookie-deleters.js';
-import { handleAsyncPromise } from '../responders/handlers.js';
 import { clearDeviceToken } from '../updaters/device-token-updaters.js';
 import { assertSecureRequest } from '../utils/security-utils.js';
 import {
@@ -676,7 +676,7 @@
     viewer.cookieInvalidated = false;
   }
   if (!viewer.getData().cookieInsertedThisRequest) {
-    handleAsyncPromise(updateCookie(viewer));
+    ignorePromiseRejections(updateCookie(viewer));
   }
   if (viewer.sessionChanged) {
     addSessionChangeInfoToResult(viewer, res, result);
diff --git a/keyserver/src/socket/session-utils.js b/keyserver/src/socket/session-utils.js
--- a/keyserver/src/socket/session-utils.js
+++ b/keyserver/src/socket/session-utils.js
@@ -31,7 +31,7 @@
 import { sessionCheckFrequency } from 'lib/types/session-types.js';
 import { signedIdentityKeysBlobValidator } from 'lib/utils/crypto-utils.js';
 import { hash, values } from 'lib/utils/objects.js';
-import { promiseAll } from 'lib/utils/promises.js';
+import { promiseAll, ignorePromiseRejections } from 'lib/utils/promises.js';
 import {
   tShape,
   tPlatform,
@@ -44,7 +44,6 @@
 import { fetchEntriesForSession } from '../fetchers/entry-fetchers.js';
 import { checkIfSessionHasEnoughOneTimeKeys } from '../fetchers/key-fetchers.js';
 import { activityUpdatesInputValidator } from '../responders/activity-responders.js';
-import { handleAsyncPromise } from '../responders/handlers.js';
 import {
   threadInconsistencyReportValidatorShape,
   entryInconsistencyReportValidatorShape,
@@ -197,7 +196,7 @@
           : { status: 'state_validated' };
     } else if (clientResponse.type === serverRequestTypes.MORE_ONE_TIME_KEYS) {
       invariant(clientResponse.keys, 'keys expected in client response');
-      handleAsyncPromise(saveOneTimeKeys(viewer, clientResponse.keys));
+      ignorePromiseRejections(saveOneTimeKeys(viewer, clientResponse.keys));
     } else if (
       clientResponse.type === serverRequestTypes.SIGNED_IDENTITY_KEYS_BLOB
     ) {
@@ -216,7 +215,7 @@
           signedIdentityKeysBlob.payload,
           signedIdentityKeysBlob.signature,
         );
-        handleAsyncPromise(
+        ignorePromiseRejections(
           setCookieSignedIdentityKeysBlob(
             viewer.cookieID,
             signedIdentityKeysBlob,
diff --git a/keyserver/src/socket/socket.js b/keyserver/src/socket/socket.js
--- a/keyserver/src/socket/socket.js
+++ b/keyserver/src/socket/socket.js
@@ -45,7 +45,7 @@
 import type { UserInfo, CurrentUserInfo } from 'lib/types/user-types.js';
 import { ServerError } from 'lib/utils/errors.js';
 import { values } from 'lib/utils/objects.js';
-import { promiseAll } from 'lib/utils/promises.js';
+import { promiseAll, ignorePromiseRejections } from 'lib/utils/promises.js';
 import SequentialPromiseResolver from 'lib/utils/sequential-promise-resolver.js';
 import sleep from 'lib/utils/sleep.js';
 import { tShape, tCookie } from 'lib/utils/validation-utils.js';
@@ -71,7 +71,6 @@
   newEntryQueryInputValidator,
   verifyCalendarQueryThreadIDs,
 } from '../responders/entry-responders.js';
-import { handleAsyncPromise } from '../responders/handlers.js';
 import {
   fetchViewerForSocket,
   updateCookie,
@@ -250,7 +249,7 @@
         throw new ServerError('session_mutated_from_socket');
       }
       if (clientSocketMessage.type !== clientSocketMessageTypes.PING) {
-        handleAsyncPromise(updateCookie(viewer));
+        ignorePromiseRejections(updateCookie(viewer));
       }
       for (const response of serverResponses) {
         // Normally it's an anti-pattern to await in sequence like this. But in
diff --git a/keyserver/src/updaters/thread-updaters.js b/keyserver/src/updaters/thread-updaters.js
--- a/keyserver/src/updaters/thread-updaters.js
+++ b/keyserver/src/updaters/thread-updaters.js
@@ -28,7 +28,7 @@
 } from 'lib/types/thread-types.js';
 import { updateTypes } from 'lib/types/update-types-enum.js';
 import { ServerError } from 'lib/utils/errors.js';
-import { promiseAll } from 'lib/utils/promises.js';
+import { promiseAll, ignorePromiseRejections } from 'lib/utils/promises.js';
 import { firstLine } from 'lib/utils/string-utils.js';
 import { canToggleMessagePin } from 'lib/utils/toggle-pin-utils.js';
 import { validChatNameRegex } from 'lib/utils/validation-utils.js';
@@ -63,7 +63,6 @@
   verifyUserIDs,
   verifyUserOrCookieIDs,
 } from '../fetchers/user-fetchers.js';
-import { handleAsyncPromise } from '../responders/handlers.js';
 import type { Viewer } from '../session/viewer.js';
 import RelationshipChangeset from '../utils/relationship-changeset.js';
 
@@ -861,7 +860,7 @@
   });
 
   if (request.inviteLinkSecret) {
-    handleAsyncPromise(reportLinkUsage(request.inviteLinkSecret));
+    ignorePromiseRejections(reportLinkUsage(request.inviteLinkSecret));
   }
 
   const messageData = {
diff --git a/lib/utils/promises.js b/lib/utils/promises.js
--- a/lib/utils/promises.js
+++ b/lib/utils/promises.js
@@ -29,4 +29,12 @@
   return input.filter((value, index) => filterResults[index]);
 }
 
-export { promiseAll, promiseFilter };
+async function ignorePromiseRejections(promise: Promise<mixed>) {
+  try {
+    await promise;
+  } catch (error) {
+    console.warn(error);
+  }
+}
+
+export { promiseAll, promiseFilter, ignorePromiseRejections };