So if you submit several apps each month for review, their bot will reject all of them including ones that are in a waiting queue all at once. The worst part is that they will send you a message like the following.
Hello,
Thank you for your response. After further review, we found that this app's feature set and user interface is similar to other apps submitted to the App Store. Although the apps might not be identical, they do not differ enough in features or functionality to be considered unique. It would be appropriate to incorporate additional features, functionality, and user interface elements into your app that would better differentiate it from other apps.
Once you have made the appropriate changes to your app, we can continue with our review. We look forward to reviewing your revised and resubmitted app.
Best regards,
App Review
If you have several apps rejected, you will receive one for each rejected app. So who is spamming? Us or Apple Review? I find it quite annoying if I receive this type of messages 4 or 5 times.