if you want your vigilant off, immediately your system comes on and tunnel bear starts running,Go to settings and you should be able to turn it off

How is vigilant helpful?

It’s a fact of life, WiFi connections drop. Maybe you are in a cafe, or moving from location to location or maybe just opened your laptop. When it happens, TunnelBear automatically reconnects as soon as you have internet again; but in the brief seconds while TunnelBear is reconnecting, you’ll be using the internet without your furry protector.

Vigilant helps to protect you by blocking any unsecured traffic while TunnelBear is connecting.
vigilant
How do I use vigilant?

You can turn vigilant on from the “General” section of the preferences menu. When it’s turned on, TunnelBear will make sure that no insecure data goes in or out of your computer while you’re connecting to their network.

Vigilant joins intelliBear, maul trackers and closest tunnel as another tool for you to keep your location and browsing activities private while using the internet.

Just untick the boxes and see if it works for your pop3. I have emailed tunnelbear and they should give more info. I will pass it on when I hear. Grrrrrrrrrrr