In short, the answer is you should ask people’s permission before you put them on your list, but in reality, it’s the wrong question. People who aren’t interested in your services or your products and therefore your emails, probably don’t belong on your list. Stephanie actually suggests cleaning your lists of uninterested recipients and focus all of your energy on your more promising candidates.

She says:

Subscribers who really want to be on your file are always going to be more engaged and return higher response and revenue. Lots of “sleepers” on the file only return somnambulant results. Subscriber satisfaction and the resultant ROI is, after all, the whole point.

Permission As an Email Marketing Engagement Strategy