Make Firefox your default browser | Firefox Help - Mozilla Support Firefox will now be set as your default browser If Firefox was unable to make itself the default browser, it will open the Windows Settings Default apps panel (shown below), where you can click the entry under Web browser to choose Firefox as the default
Firefox options, preferences and settings | Firefox Help - Mozilla Support General This panel contains the following types of settings: General Startup, Import Browser Data and Tabs: Here you can make Firefox your default browser, set Firefox to restore your previous session at startup, import data from another browser and choose how tabs are opened
Add or remove a search engine in Firefox | Firefox Help - Mozilla Support Mycroft Project search engine plugins The Mycroft Project website offers search engine plugins When you click an available search plugin, you can add it to Firefox from the Search bar or from the address bar context menu, on the Install plugin page
Choose your preferred PDF viewer in Firefox | Firefox Help When Firefox is set as the default PDF viewer, it automatically opens PDF files in the built-in viewer However, you can choose to use another application to view your downloaded PD
Find and install add-ons to add features to Firefox Add-ons let you add bells and whistles to Firefox You can get add-ons that compare prices, check the weather, change the look of Firefox, listen to music, or even update your Facebook profile
Change your default search settings in Firefox The Search panel in Firefox Settings lets you customize your search options You can add or remove search engines, change your default search engine, change address bar settings, assign or change keyword shortcuts, turn the search bar on or off and choose whether to display search suggestions first or not at all
Mozilla Thunderbird marking my OUTGOING messages as spam (never . . . Not knowing all the details, I would try this: first, edit the DESCRIPTION field of BOTH of the RCN SMTP server settings pane to be UNIQUE from each other that can be your guarantee that you are not mismatching servers after doing that, click the account settings and highlight each account name and look at the bottom line on right side to see if the SMTP server link matches the unique
Configuration Editor for Firefox | Firefox Help - Mozilla Support The Configuration Editor (about:config Advanced Preferences page) lists Firefox settings known as preferences that are read from the prefs js and user js files in the Firefox profile and from application defaults