They do NOT partner with banks and they do NOT do anything but fill out credit card applications.

What is the best way to screen international applicants? 

Documentation of applicants prior experience managing rental units or other background involving property maintenance. 

Perform the same task in each app to ensure a fair comparison.Load a property with pictures and details.Market that property.See what your marketing looks like from the public's perspective.Submit a fake application to see how easy the process is.Run a credit/screening report on yourself.Enter a maintenance request, assign a vendor, and attach a fake invoice.Enter charges to the tenant's ledger.Enter recurring charges and automatic late fees.Sign documents electronically.Run owner reports.After testing a few apps, one should clearly stand out.

3) What feedback are they giving you about inquiries, showings, feedback & applications?

Their application doesn't ask for many details, just like when I filled out a comparable form 20+ years ago, although I was legit.

Do one task at a time in each app so you can compare apples to apples.Load a property with pictures and details.Market that property.See what your marketing looks like from the public's perspective.Submit a fake application to see how easy the process is.

This means that if you were buying a quad and the tenant-occupied units rented for $2,000/mo, we would give you $4,500/mo additional qualifying income on your loan application ($2,000 x 3 units x 75% = $4,500/mo net rent). 

In that regard Zapier offers an application called webhooks that has support with Lodgify, however there isn't for Rategain(Channel Manager). so I seeking towards finding ways to join both channel managers to benefit both of two worlds.

We have had a lot of applications and several showings but haven't been able to land it to no fault of the house.