diff --git a/static/js/settings.js b/static/js/settings.js
index 72936adee..3819c83fa 100644
--- a/static/js/settings.js
+++ b/static/js/settings.js
@@ -3031,12 +3031,14 @@ async function initEmailAccountsSettings() {
       const body = {
         name: el('eaf-name').value.trim() || el('eaf-from').value.trim(),
         from_address: el('eaf-from').value.trim(),
+        display_name: el('eaf-display-name').value.trim(),
         imap_host: el('eaf-imap-host').value.trim(),
         imap_port: parseInt(el('eaf-imap-port').value) || 993,
         imap_user: el('eaf-imap-user').value.trim(),
         imap_starttls: el('eaf-imap-starttls').checked,
         smtp_host: el('eaf-smtp-host').value.trim(),
         smtp_port: parseInt(el('eaf-smtp-port').value) || 587,
+        smtp_security: el('eaf-smtp-security').value,
         smtp_user: el('eaf-imap-user').value.trim(),
       };
       if (!body.name) { el('eaf-msg').textContent = 'Enter a Name or Email first'; el('eaf-msg').style.color = 'var(--red)'; return; }
diff --git a/tests/test_email_oauth_connect_smtp_security.py b/tests/test_email_oauth_connect_smtp_security.py
new file mode 100644
index 000000000..21c4224a6
--- /dev/null
+++ b/tests/test_email_oauth_connect_smtp_security.py
@@ -0,0 +1,15 @@
+"""Regression coverage for SMTP security saved before Google OAuth."""
+
+from pathlib import Path
+
+
+_REPO = Path(__file__).resolve().parents[1]
+
+
+def test_email_tab_oauth_connect_persists_selected_smtp_security():
+    source = (_REPO / "static" / "js" / "settings.js").read_text(encoding="utf-8")
+    start = source.index("el('eaf-oauth-btn').addEventListener")
+    handler_body = source[start:source.index("if (!body.name)", start)]
+
+    assert "smtp_security: el('eaf-smtp-security').value" in handler_body
+    assert "display_name: el('eaf-display-name').value.trim()" in handler_body