I never had an account nor want one
- User Agent: Mozilla/5.0 (Android 7.0; Mobile; rv:65.0) Gecko/65.0 Firefox/65.0
Hi MAriePaterno1, does the email have an unsubscribe link?
Yes the Emal has an unsubscrube link cancel all Emails from you
Yes the Email had a unsubscribe link
YES the Email had unsubscribe link
If it is a genuine Mozilla email, the unsubscribe link is your best bet.
If the emails are related to a Firefox Account, you can manage your preferences here: