hello, you're posting in the firefox support forum - firefox is a browser and doesn't handle your emails. in case you're using thunderbird as a mail client and have a question about it please say so, then we will move your question into the thunderbird queue. if you're accessing your mails through webmail, contact your email-provider in order to help you further...

Problems with email and how to find help

You need to learn how to train your Spam filters. Contact your e-mail provider (whoever is after the @ symbol in your e-mail address) for help.

Tyler Downer said

You need to learn how to train your Spam filters. Contact your e-mail provider (whoever is after the @ symbol in your e-mail address) for help.

Thanks or the help...

Some e-mail providers have an option to sort incoming mail. Check with your provider.

Go here and register for protection for your e-mail and phones; The National Do Not Call Registry