I have a few questions about sending out postcards and/or letters....A little background: I am in search of my first investment property and leaning toward a single family flip.

Criteria like equity %, bedroom count, median price range, etc.As for the marketing piece, an example would depend on the type you are leaning towards: postcard, yellow letter, typed letter, etc.

I have been marketing with several Craigslist postings/day primarily and now am beginning to send postcards to Cash Buyers in my zip code area.

I found some abandoned properties, pulled them up on the PVA website and got the owner info (which had a different address), mailed out a post card wanting to buy the property.

Expired listings - Direct mail post cards - letters - to targeted owners - commercial - lots - non-conforming -Internet web site (received over 100 leads in 6 weeks)Farming - know how to - where to go - what to say - who to approachRadio - commercial must be sincere - have reference and be brandedTV -if you don't look the part - hire talent to shoot the commercial for youAll of the above methods I have used and have done successful transactions - anyone with a few bucks can find leads - motivated sellers (that's the easy part of this crazy business)  - but------ the important thing here is WHAT YOU DO  when you get a lead!

I am under the understanding that investment potential leads and far harder to obtain than seller leads, so i figured i would start off with seller leadsI have been reading a lot of post, but most of them are dated around 2009-2012 based on the searches on this site, so i figured i would ask since the market is always changing and new things spark better results.I have read about "Horsey Letters" being very successful for seller addsI have read "Yellow Paper Letters" get you the most phone calls but volatile lead %I have read that "Action Postcards" are pretty rock solid to use, because they are effective for the price.My question is what are you using for leads?

Many of them have either expired address or wrong address as I have got a lot of my post cards come back to me undelivered. 

Check out Meetup.com to find that one and others.As for wholesaling - we just landed our first deal from our own postcard campaign. 

You may have tried some of these already, but: showmojo.com, hotpads, zillow, trulia, craigslist, facebook area renting groups, advertising move-in specials, contacting all of your good current and past tenants (when possible) and giving them a referral bonus, direct mail postcards to other apartment tenants (check local laws/codes), putting up flyers at local businesses and schools, calling HR departments to get on their housing lists for any relocating employees, calling non-profits orgs who provide housing for special needs folks, call your local HUD office, etc.I normally try for a 15-18 month lease this time of year so that you won't have the same issue next time the unit vacates.  

All of these home owners are getting multiple letter and postcards from other investors every month.