Go to setting after login to online check writer and click on QuickBooks connect. Select the QuickBooks desktop. It prompts you to download software to sync with onlinecheckwriter. After installing synching software, enter online check writer username & password.
Make check payments as you usually enter them in QuickBooks Online. OnlineCheckWriter automatically picks it up, and it will be ready to print by yourself or mail it to your customers/vendor/clients at OnlineCheckWriter.Com instantly.
If you select mail it, OnlineCheckWriter.Com print that specific checks, stuff it, label it and mail to your payee address given on check by USPS.