There are a few ways that a chain letter could have gotten to your inbox.
* Someone you know may have forwarded it to you. This is the most common way that people receive chain letters. If you receive a chain letter from someone you know, you should politely decline to forward it and let them know that it is a scam.
* You may have signed up for a mailing list that sends out chain letters. Some mailing lists send out chain letters as a way to generate traffic. If you receive a chain letter from a mailing list, you should unsubscribe from the list.
* You may have visited a website that contains chain letters. Some websites display chain letters in the hope that people will click on them and spread them. If you see a chain letter on a website, you should close the page and avoid clicking on any links.
If you do receive a chain letter, it is important to delete it and not forward it. Chain letters are often scams and can lead to identity theft or other problems.