Malicious people can tell from an email your Internet address n provider which can be broken down to the neighborhood you live in. Gmail has protection against this for a random person seeking your information but most other email services are wide open for a person to tell the general location of where u are mailing from, but not the actual address, but area u in.

Police can request from an Internet provider your home address where the mail was sent from, but in most cases will need a court order.

The above info is from the US, not sure about other countries, but I personally know how to figure out where someone is from unless using Gmail, good thing Im a good person .

As for the topic of this thread, I find forum use very interesting as for compulsive gambling its almost like there is zero forum usage, besides a few random forums that see no traffic. I use Reddit a lot for gambling addiction which has a Discord for group chat which is awesome. Reddit bipolar section is pretty busy like this forum. I really like Psychcentral Bipolar forum a lot as there is next to zero trolling, people are very supportive/nice and there is some great content and discussion on this board.