Is there anyone with experience contacting rental property owners? After hearing about sending mailers to property owners on the Bigger Pockets Podcast, it seemed like a good idea but is there a way to consolidate a mailing list (short of going on AirBnB, Craigslist and sending them to the listed address on those sites?) I have several years in construction and would like to start offering property management on the physical maintenance of the building. Thank you, appreciate the Bigger Pockets forum, wealth of information. 

@Paul Pettini there are many list-selling companies online you can google to find.