Usually having a servicing company helps the lender to consider that.  

Dealing with warranty service is a pain in any situation but when you also have to deal with a tenant on top its even worse.

It likely is out of date as to cost as this info is quite old (my guess is 5 years but it could be longer):- Rent Recovery Service: offers flat fee service starting at $20. 3 letters start at $30.

Do you use any tools or services to automate the process, or is it something you manually handle?

if he performs a service for you, just pay him for it. 

I believe that you don't get returns (failed to deliver) with bulk mailers so you don't know which addresses are bad.That's the simple stuff.My advice is to do various mailings that you or some prepares locally, that go out immediately, using 1st class postage.

They withdrew this service in 2012.

Working with Real Estate ProfessionalsLocal Real Estate Agent: Choose an agent experienced in student housing.Property Management Services: Consider hiring a property manager if you’re not local.Inspection and Appraisal: Conduct thorough due diligence to avoid costly repairs.6.

I've been working in software consulting services for over 15 years and it's kind of disheartening that I haven't been able to figure it out, but I've got other things to worry about (like how to get a few more properties so i don't have to worry about buggie tech crap anymore :) ).

Relating to services.