The standard 10% usually covers tenant management only - advertising, screening tenants, preparing leases and renewals, fielding phone calls from tenants, collecting rent and conducting evictions.  

Just connect with resources in the area (ie title, escrow, attorneys, wholesalers, investors, agents) and work together with them.

another reason to move to a service like cozy.co for rent collection; both sides can see/print/etc rental payment historyOtherwise, like others noted, it should take under 3 minutes to type/sign/send via email a receipt. 

You have found the absolute best resource on the internet to learn about investing in real estate.

In the past I have sent rental contracts to a potential renter who was stationed in Korea, did a walk through of the property via FB messenger video chat, ran background checks with TransUnions Smart move, collected security deposit via PayPal and emailed the tenant the code to the lock box that had the key.

Before anyone considers that, please read CA Civil Code 2945.45 which requires you to register with the CA DOJ before taking any action as a foreclosure consultant, which specifically includes collecting overages.

His whole series is worth reading, but are the seminars really necessary with as many resources are available online for free?  

I'd also suggest the Commons on Champa, a great resource for entrepreneurs plus they have special events focusing on women and business.

I need some advice on online rent payment collection services.

If you do not have the resources to do so then link up with a good wholesaler who already has these systems in place.