Hi Geoff! Front does not perform spam analysis. We sit on top of your email provider, so all messages that make it to your inbox will appear in Front. However, we do provide some options in Front for manually labeling spam and blocking senders. Keep in mind that to use the Block sender feature in a shared inbox, you will need the permissions Conversations - Delete / mark as spam and Shared contacts - block sender. Check out this article to learn more. Let me know if you have further questions about this topic!