If you asked me advice about how often I would send emails out to lists, I would give you the standard answer of once a month, or a little more with good reason.  But don’t overdue it or your list will run away.

I would be wrong.

Not wrong for everyone, but wrong for some people.  I read this article and still have trouble wrapping my mind around it.  Who would want 15 emails per day?  Obviously at least 400,000 people.

The point I take away from this is that there are statistically correct answers, but that is not necessarily the correct answer for you.