Firefox is a web browser, not an e-mail provider. I'd suggest you spend some time adjusting the spam filters in your e-mail provider, unfortunately once you are on one spam list you will eventually be on all of them as they sell your e-mail address. I'd also suggest you scan for malware on your computer, [[Troubleshoot Firefox issues caused by malware]]

Separate Issue; Your System Details shows; Installed Plug-ins Adobe PDF Plug-In For Firefox and Netscape 11.0.10 Adobe PDF Plug-In For Firefox and Netscape 10.1.13 <br>Having more than one version of a program may cause issues. You must remove the older programs. Then get the current full installer. ------------------------ Are you talking about e-mails, or pop-ups? '''E-Mails;''' Go here and register for protection for your e-mail and phones; '''[https://www.donotcall.gov/ The National Do Not Call Registry]''' '''Pop-ups;''' '''[https://addons.mozilla.org/en-US/firefox/addon/adblock-plus/ Adblock Plus]''' {web link} Blocks annoying video ads on YouTube, Facebook ads, banners and much more. Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable). '''[https://addons.mozilla.org/en-US/firefox/addon/adblock-plus-pop-up-addon/ Adblock Plus Pop-up Addon]''' {web link} Adblock Plus Pop-up Addon extends the blocking functionality of Adblock Plus to those annoying pop-up windows that open on mouse clicks and other user actions. Forum; '''[https://adblockplus.org/forum/ Adblock Plus Homepage]''' {web link}