I get this:

One more thing to note, perhaps it helps: I am using Domoticz in parallel and I can send email notifications from Domoticz, the following does work:

same error:

Yes, seems I am able to ping the server:

I did that already with the same result ... then I tried STARTTLS & 587.

I get this when I hit the "test connection" button

(

Just need to add: I am running Mycontroller on Windows 10 for now, could that be the reason I'm not able to get gmail notification working?

Hi, MyController (1.0.0) is a great job:-), works with smartsleep very well so far.
I am trying to set up a gmail notification, does not work with the settings above however.
When I press the test button I get the 400 error ... the respective gmail account is configured for low security.
Has google changed something in between?
Is gmail still working for you guys?
Thanks ...