Your mail site usually will set a cookie. So in order for the site to recognize you after you exit and restart Firefox, these things have to be true:

• You are not vising your mail site in a private window
• You didn't change Firefox's default setting of accepting persistent cookies from all servers (first party and third party)
• You do not have Firefox set to clear cookies at shutdown
• You have not installed any add-ons that clear cookies
• You do not have any external cleaning/security/privacy software that clears Firefox cookies

If you're not sure about your cookie settings, check out the Privacy panel of the Options dialog:

orange Firefox button (or Tools menu) > Options > Privacy

If you have "Firefox will: remember history" then cookies are accepted and retained.

If you have "Firefox will: use custom settings for history" you can check your cookie settings below that line.

If you have "Firefox will: never remember history" then you are going to be using full time private browsing and cookies are discarded between sessions.

If cookie settings are okay, and you would like advice on your extensions, it would be helpful if you could post a list of them. Open the Troubleshooting Information page using either:

• Help > Troubleshooting Information
• type or paste about:support in the address bar and press Enter

In the upper left corner, click the Copy text to clipboard button, then paste into a reply.

After previewing, you will see there is some extra information below the list of extensions that you can edit out if you like.

You can let all cookies expire when you close Firefox.

• Firefox/Tools > Options > Privacy > Cookies: Keep until: I close Firefox

Create a cookie 'allow' exception for cookies that you would like to keep.

• Firefox/Tools > Options > Privacy > Cookies: Exceptions

In case you are using "Clear history when Firefox closes":

• do not clear the Cookies
• do not clear the Site Preferences

• Tools > Options > Privacy > Firefox will: "Use custom settings for history": [X] "Clear history when Firefox closes" > Settings
• https://support.mozilla.org/kb/Clear+Recent+History

Note that clearing "Site Preferences" clears all exceptions for cookies, images, pop-up windows, software installation, passwords, and other website specific data.

Clearing cookies will remove all specified (selected) cookies including cookies with an allow exception that you would like to keep.

I tried the things you suggested and they did not solve the problem; I still have to sign in every time I go the the mail section. I need to talk to a real person who can walk me through the solution to the problem.

does your anti virus or other software package (LikeCCleaner) offer to protect your privacy when browsing? All the information I read here is about clearing Cookies and forcing a reset. This is happening to all the time. So if it is not a Firefox setting that is clearing the Cookies, perhaps it is another program. I remember Nortons used to show you your Cookies as some sort of tracking thing and offer to delete them when it did a scan, "for your provacy". It is something like that your looking for.

If you have software like Advanced SystemCare that might reset some files to older versions to protect these files against changes then check the settings or uninstall this software.