But I use TurboTenant for the rent collection and lease management personally. 

Quote from @Logan Walkup: What collection agency is best for prior tenant that owes money?  

To all my commercial property owners, what app/service do you like best for rent collection?

Every month I am texting 4 or 5 tenants to remind them to pay rent or trying to collect rent fees.

What works for me may not work for you.Right now your only "problem" is that you want to collect rent online.

Their arguments were # 1  that a NON EXISTING ENTITY cannot bring a collection action and # 2 well over 20 years of time had gone by with no attempts to collect on the Debt owed to the Mortgage and Note holder.  

It also has a bunch of really unique benefits/tools for your rental portfolio (Lease Indication Tool, Expense Tracking, Maintenance Requests, Rent Collection, Tenant Communication, etc.) in one central place.

Quote from @Joe Daniel: Quote from @Dave Harlan: Quote from @Joe Daniel: Hey Dave, lots of investors build their buyers list by tracking activity from local public records especially recent cash purchases, LLC transfers, and repeat buyers in the county.It helps you identify who’s actually buying right now instead of collecting random emails.If you ever want to talk through ways to source or organize that data efficiently, happy to share what I’ve seen work well for others. 

It’s free, handles rent collection, expense tracking, and gives you clean property-level financials for taxes.

How about broken assignment chains, paying attention to BPOs where agents filch old pics from the MLS and never visit the property, not reading the collection notes, not having boots on the ground check the place out, not using social media to stalk the borrowers, letting your servicer set the collection plan, not being up the servicer's behind...and the list goes on.