partially responsive email

I have created a responsive email newsletter that my organization sends out twice a month. I noticed that the newsletter appears totally responsive when viewed in a browser, but only partially responsive when viewed in the inbox. The newsletter is comprised of two independent columns that are meant to merge when viewed on a mobile and this is what happens in a browser, but they stay as two columns and only get "squished" when viewed in the email client on a mobile. Is it possible to get this part of the responsive design to work as it is meant to, in the email client as well?
Here is URL of the last newsletter:
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Dave BaldwinFixer of ProblemsCommented:
That depends on the client and what you're trying to do.  This page shows some of the differences in CSS in different email clients:

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avirAuthor Commented:
Very helpful. What does the first row ("Responsive") refer to? Media queries?
Dave BaldwinFixer of ProblemsCommented:
Probably.  In addition, no email clients that I know of support javascript at all so any 'responsiveness' that is generated by javascript won't work in them.
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