Liberty's SMTP Relay will be blocked by Google unless you 'Allow less-secure apps'.
Go to the USPS, get pointed to a fake website.
Payment Logistics requires 'advanced' network setup, which you are responsible for.
One of the most-common causes of issues with consignment software, is running it on an "unclean" system.
It's likely not your computer, nor your network. It's the programmer's fault -- blame your software vendor.
These are known issues with the Liberty4 Consignment consignment software system.
These are known issues with the ConsignPro consignment software system.
This is a free utility written by The Computer peeps. It lets consignment software owners easily test their email settings.
Pushbullet lets you 'push' messages, images, and links to any/all of your devices. You can also send & receive SMS messages from your computer.
An open letter to the consignment software vendors, from The Computer Peeps, on behalf of all of your customers.