But you could also pay someone to mail their list.
Of course you would need to have a relationship with that person and be able to do whatever they ask of you plus be able to afford to pay them.
I was able to convince a buddy of mine with a decent list to do this before and our agreement was that if I made him more money as an affiliate, I would only pay him commissions owed. If I made less than our agreed upon amount, I would pay him the difference between the commissions I owed him and the amount we agreed to.
Was a win-win because I broke even and it did not cost me in the end.
Again, the only reason this worked is because I had a relationship with this person.
Hope this helps you think outside the box a little bit.