This is intentional but admittedly a bit limiting. The snooze button is only shown when you’re viewing the Inbox perspective — the code checks FocusedPerspectiveStore.current().isInbox() before rendering it, and search results are their own perspective. The reasoning was that snoozed threads get moved to a Snoozed folder and then returned to Inbox, which only makes sense in an inbox context. That said, there’s no good reason you shouldn’t be able to snooze from search — I’ll revisit this restriction. In the meantime, you can open the thread from search results, then navigate back to the inbox and snooze it from there.