I think you have to try and figure out WHY they didn’t confirm.

If you’re in the marketing niche, you may expect your visitors KNOW how to do so.
If it’s a give-away, you can expect high numbers of un-confirms, because these GA’s tend to lead to HUGE info overload, which causes initial enthusiasm to be converted into de-motivation.
After downloading product no. 43, they’ve completely lost interest as they don’t know what to do with all that.

If you’re in other niches, people may not be that Net-savvy and you have to investigate and test your sign up process in detail, especially the re-direct page where they’re sent after clicking the sign up button.

Personally I would never email un-confirmed sign ups. Not worth the risk.

Just my 2 cts.

About two weeks ago I made it a priority to update my “success” pages where I tell my subscribers to check their email for a confirmation email to include instructions on how to whitelist me.

I also blogged about it…I can’t tell if that’s made a difference but I would really like to get my number of unverifieds down.

I don’t know how I feel about emailing them though. I think I’d rather err on the side of caution and just let them go.

I’m not familiar with LargeResponse. How long have you been using them?

That’s a great idea. I do check unverifieds from time to time. There could be any number of reasons for an unverified lead and probably the most common is spam filtering from the email provider.

What I have on my thank you page is a small paragraph on “how to whitelist us” and letting subscribers know that in order to receive my reports, they have to confirm their request.

I know not everyone will go to the thank you page, but so far, so good and over time, if there are still unverifieds, I do send them a reminder, but I don’t get too obsessive about it.

Patty