Today, while doing some research to answer a client's questions, I found myself digging through various archives and asking colleagues for points to bits of info. What I'm looking for happens to be information surrounding best practices for subscriber re-engagement and reconfirmation. Turns out, way back in December, our own Morgan Stewart posted his findings over on his blog, the Email Research Center. (My bad for not noticing this sooner! Sorry, Morgan!)

Point #3 really jumps out at me: I've never really considered using both a "Yes" and a "No" button as possible responses. But, the data speaks for itself: Doing so gets your more opt-in reconfirmation clicks.

He also talks about emailing a second request. This is also wise. Morgan says that he found "that these second requests consistently get nearly the same number of opt-ins as the first, so failing to do so could have a material impact on the success of your campaign."