How to participate?

Hi, and happy holidays to you all; I finished a course for manual software testing, and I would like to participate in testing Firefox nightly. I don’t have experience in testing web browsers, but I really hope that I can contribute to your project. I sent email to firefox-qe@mozilla.org but gmail responded with automatic message “The email account that you tried to reach does not exist” ?

Did you send it to firefox-qe instead of firefox-qa@mozilla.org, or is that a typo ?

I did sent mail to firefox-qe, but that is the address that I found on https://quality.mozilla.org/teams/firefoxqe/