diff --git a/appview/pages/htmx.go b/appview/pages/htmx.go
--- a/appview/pages/htmx.go
+++ b/appview/pages/htmx.go
@@ -4,6 +4,7 @@
 	"fmt"
 	"html"
 	"net/http"
+	"strings"
 )
 
 // Notice performs a hx-oob-swap to replace the content of an element with a message.
@@ -23,6 +24,18 @@
 	w.Header().Set("Content-Type", "text/html")
 	w.WriteHeader(http.StatusOK)
 	w.Write([]byte(markup))
+}
+
+func (s *Pages) NoticeHTMLWithClears(w http.ResponseWriter, id string, trustedHTML string, clearIDs ...string) {
+	var b strings.Builder
+	b.WriteString(fmt.Sprintf(`<span id="%s" hx-swap-oob="innerHTML">%s</span>`, id, trustedHTML))
+	for _, clearID := range clearIDs {
+		b.WriteString(fmt.Sprintf(`<span id="%s" hx-swap-oob="innerHTML"></span>`, clearID))
+	}
+
+	w.Header().Set("Content-Type", "text/html")
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte(b.String()))
 }
 
 // HxRefresh is a client-side full refresh of the page.
diff --git a/appview/signup/signup.go b/appview/signup/signup.go
--- a/appview/signup/signup.go
+++ b/appview/signup/signup.go
@@ -332,9 +332,9 @@
 	// if we get here, we've successfully created the account and added the email
 	success = true
 
-	s.pages.NoticeHTML(w, "signup-msg", fmt.Sprintf(`Account created successfully. You can now
+	s.pages.NoticeHTMLWithClears(w, "signup-msg", fmt.Sprintf(`Account created successfully. You can now
 		<a class="underline text-black dark:text-white" href="/login">login</a>
-		with <code>%s.tngl.sh</code>.`, username))
+		with <code>%s.tngl.sh</code>.`, username), "signup-error")
 
 	// clean up inflight signup asynchronously
 	go func() {