I use Thunderbird to save them to eml. Outlook will also save to eml, and I'm sure most desktop clients will as well.

Quoting Wikipedia here, "Used by many email clients including Microsoft Outlook Express, Windows Mail and Mozilla Thunderbird.[36] The files are plain text in MIME format, containing the email header as well as the message contents and attachments in one or more of several formats."

Hopefully I'm not misunderstanding what you're asking for.

From the article:

"There is an oft-stated misconception that if a user never clicks on ads, then blocking them won't hurt a site financially. This is wrong. Most sites, at least sites the size of ours, are paid on a per view basis."

I'm gonna give a second thumbs up to the 'combofix + malwarebytes' errr...combo. Rarely do I have to go further than that to clean a users' machine at my job. I just wanted to add a tip I've picked up at work--
If a machine is infected with something that prevents you from installing a program (and also prevents Combofix from running), just change the name of Combofix. I usually just change the first letter, and that's enough to get it going. Like the guy above me said, Combofix won't solve all your problems by itself, but once it runs that will usually clean it up enough to let Malwarebytes install and finish the job.

Someone forgot to tell Verizon.

http://verizonmath.blogspot.com/ (blogspot.com)
It's long (27 minutes) and old, I know. Still worth a listen if you haven't heard it before. Also still funny if you have.