Who do you guys use for national e-mail blast for NNN listings? Need help finding a good investor/broker e-mail database.
I'm starting to get several NNN listings and need to expand my e-mail database to reach as much as possible.  Free or purchase just looking for some marketing companies and such to research.  

Any recommendations fellas? 
[{"id": "dkcheez", "text": "I don't. I have a large database I built myself and have explored buying lists from companies but they don't seem to have lists of property owners, especially not by type. If you find one let me know. I'll likely buy too. ", "replies": [{"id": "dkcq09p", "text": "Yea I'm looking for Investors/brokers right now to get this listing out as much as possible. ", "replies": [{"id": "dkcsql5", "text": "Where is it and what it is?", "replies": [], "depth": 3}], "depth": 2}], "depth": 1}, {"id": "dkcmqhk", "text": "How much are you looking to spend? ", "replies": [{"id": "dkcpyws", "text": "Will pay for quality.  Open to anything really. ", "replies": [], "depth": 2}], "depth": 1}, {"id": "dkcsot0", "text": "What kind of nnn listings typically? Office/industrial/retail? Pm'ed you on this as well. ", "replies": [{"id": "dkd1c57", "text": "I'm interested... PM me", "replies": [], "depth": 2}], "depth": 1}, {"id": "dkcwhk8", "text": "Depends what the asset class is, but I'd look into joining a professional real estate council. NMHC for multi family, corenet for for office, ULI for more general regional connections. Once you're a member you get contact info of other members. Hammer through the list and add groups based on interest level. If you're bringing groups with capital good deals they'll be more than happy to meet/talk. \n\nA lot of the members of these groups are nationwide, so you'll get a decent sized list. ", "replies": [], "depth": 1}, {"id": "dkd48su", "text": "We have spent 4 years manually entering in contacts from the web and through deep research on the net ...its the hardest part about building a network of clients in Commercial Real Estate. The brokers are easy, they are all just listed on the website. Maybe hire someone to scrape the web of various broker websites or try import.io and manually do it.", "replies": [], "depth": 1}, {"id": "dkmpa64", "text": "Are you looking to buy or sell?", "replies": [], "depth": 1}, {"id": "dkxvj7w", "text": "I'm interested in this as well. I have a $6m triple net deal I'm looking to sell in update ny. ", "replies": [], "depth": 1}, {"id": "dl6fmv3", "text": "Real Capital Markets and they are not expensive at all.  56000+ principals.", "replies": [], "depth": 1}]