Lower volume mailing companies?

[John Mucilli]

Hey guys,

I'm an investor involved in fix and flips, working on acquiring properties directly. After hopefully acquiring deals the goal is to keep projects we want to work on, and wholesale out others. Direct mailing is new to me, but I've gained a ton of knowledge researching through this site and affiliates. I'm registered to Dealmachine for my D4D, and I've been in contact with Open Letter Marketing (who seem awesome) for mailing lists I've pulled through Listsource. 

Point of my post:

I have some smaller lists (sub 200) that I'd like to get out, but it seems like OLM  has higher mailing minimums than I need right now. Are there any other companies/affiliates that are recommended for lower volume mailing?