diff --git a/deltachat-rpc-client/src/deltachat_rpc_client/pytestplugin.py b/deltachat-rpc-client/src/deltachat_rpc_client/pytestplugin.py
index f628fdcfa..4b8562af7 100644
--- a/deltachat-rpc-client/src/deltachat_rpc_client/pytestplugin.py
+++ b/deltachat-rpc-client/src/deltachat_rpc_client/pytestplugin.py
@@ -27,12 +27,17 @@ class ACFactory:
     async def get_unconfigured_bot(self) -> Bot:
         return Bot(await self.get_unconfigured_account())
 
-    async def new_configured_account(self) -> Account:
+    async def new_preconfigured_account(self) -> Account:
+        """Make a new account with configuration options set, but configuration not started."""
         credentials = await get_temp_credentials()
         account = await self.get_unconfigured_account()
-        assert not await account.is_configured()
         await account.set_config("addr", credentials["email"])
         await account.set_config("mail_pw", credentials["password"])
+        assert not await account.is_configured()
+        return account
+
+    async def new_configured_account(self) -> Account:
+        account = await self.new_preconfigured_account()
         await account.configure()
         assert await account.is_configured()
         return account
diff --git a/deltachat-rpc-client/tests/test_something.py b/deltachat-rpc-client/tests/test_something.py
index 5b2e67af9..d1208042e 100644
--- a/deltachat-rpc-client/tests/test_something.py
+++ b/deltachat-rpc-client/tests/test_something.py
@@ -41,6 +41,16 @@ async def test_acfactory(acfactory) -> None:
     print("Successful configuration")
 
 
+@pytest.mark.asyncio
+async def test_configure_starttls(acfactory) -> None:
+    account = await acfactory.new_preconfigured_account()
+
+    # Use STARTTLS
+    await account.set_config("mail_security", "2")
+    await account.configure()
+    assert await account.is_configured()
+
+
 @pytest.mark.asyncio
 async def test_account(acfactory) -> None:
     alice, bob = await acfactory.get_online_accounts(2)