Originally Posted by DamianJ

For a good opt in list, yes.

You build up trust with a good list.

They sign up, and every week you send them a newsletter with what you said you would send them. 20 pics. A vid. Whatever.

Don't spam them. Don't send them anything else. Ever.

After a couple of years, you build up an amazingly responsive list.

One year, I got 100% open rate on a email. On Xmas day. Honest to god I did.