At least for me, since I have a second 3rd party email registered with gmail, if a new device logs in, I will get an email saying there was a new login. 2 facto

At least for me, since I have a second 3rd party email registered with gmail, if a new device logs in, I will get an email saying there was a new login. 2 factor auth is even better, but a little more of a hassle.