diff --git a/worker/imap/open.go b/worker/imap/open.go
index b1314a4b..e57d3978 100644
--- a/worker/imap/open.go
+++ b/worker/imap/open.go
@@ -10,6 +10,11 @@ import (
 )
 
 func (imapw *IMAPWorker) handleOpenDirectory(msg *types.OpenDirectory) {
+	// The SELECT we'll issue might trigger MailboxStatus replies from the
+	// server, causing unnecessary CheckMail commands. Let's ignore those.
+	drain := imapw.drainUpdates()
+	defer drain.Close()
+
 	imapw.worker.Debugf("Opening %s", msg.Directory)
 
 	sel, err := imapw.client.Select(msg.Directory, false)