E-mail marketing has been around a long time, and I would include safelists, bulk e-mail programs, and list builders under this category. I've had pretty good success promoting with these tools; so you need to make sure this is part of your marketing arsenal. Note: The great thing about Bulk email and List Builders is that you limit the amount of email sent to you; often safelists will generate tons of email so either invest in a safelist sender or be very selective.
Here are my top Email Marketing Programs: