You don't need G-suite ...
It's already explained how to enable your gmail smtp to be used:
- Go to your Google Account.
- On the left navigation panel, click Security .
- On the bottom of the page, in the Less secure app access panel, click Turn on access .
Also - the redirect is not working because you probably have not set up the smtp settings properly, which causes the server action to run with an error.
You can debug and see what's the error as explained here: Debugging Server Connect Errors