an email-based alternative to Google Reader that some are quite happy with, and which renders LaTeX, is Blogtrottr ---

http://robert.orzanna.de/2013/04/google-reader-shutdown-blogtrottr-being.html

Here's how a typical Blogtrottr output looks like in a mail client (Thunderbird):

<IMG SRC="http://ilorentz.org/beenakker/MO/Blogtrottr.png">