diff --git a/packages/twenty-server/src/modules/messaging/message-import-manager/drivers/imap/utils/parse-imap-authentication-error.util.ts b/packages/twenty-server/src/modules/messaging/message-import-manager/drivers/imap/utils/parse-imap-authentication-error.util.ts
index 6e69f337f6..65d5b9ff2d 100644
--- a/packages/twenty-server/src/modules/messaging/message-import-manager/drivers/imap/utils/parse-imap-authentication-error.util.ts
+++ b/packages/twenty-server/src/modules/messaging/message-import-manager/drivers/imap/utils/parse-imap-authentication-error.util.ts
@@ -1,3 +1,5 @@
+import { isDefined } from 'twenty-shared/utils';
+
 import {
   MessageImportDriverException,
   MessageImportDriverExceptionCode,
@@ -5,6 +7,12 @@ import {
 import { type ImapFlowError } from 'src/modules/messaging/message-import-manager/drivers/imap/types/imap-error.type';
 import { isImapNetworkError } from 'src/modules/messaging/message-import-manager/drivers/imap/utils/is-imap-network-error.util';
 
+const TRANSIENT_IMAP_RESPONSE_CODES = new Set([
+  'UNAVAILABLE',
+  'INUSE',
+  'SERVERBUG',
+]);
+
 export const parseImapAuthenticationError = (
   error: ImapFlowError,
 ): MessageImportDriverException => {
@@ -16,6 +24,17 @@ export const parseImapAuthenticationError = (
     );
   }
 
+  if (
+    isDefined(error.serverResponseCode) &&
+    TRANSIENT_IMAP_RESPONSE_CODES.has(error.serverResponseCode)
+  ) {
+    return new MessageImportDriverException(
+      `IMAP transient error [${error.serverResponseCode}]: ${error.responseText ?? error.message}`,
+      MessageImportDriverExceptionCode.TEMPORARY_ERROR,
+      { cause: error },
+    );
+  }
+
   if (error.authenticationFailed === true) {
     return new MessageImportDriverException(
       `IMAP authentication error: ${error.message}`,