If you click on UserCP in the green band at the top of the page, then on the left hand side, go down and click on Edit Options. Then on the right side of the page, there will be a box labeled "Messaging and Notification." The 2nd "sub box" under this is Default Thread Subscription Mode. There is a drop-down menu there. If you click on Instant Email Notification, you will get an email every time someone posts to a thread that you have either started or posted on. You can also chose to get an email daily or weekly instead of instantly.
But be careful - it can become addicting!!
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybrid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10