The ISPAPI Backorder Addon supports the following functions and features:
The full documentation is included in the ZIP file.
The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.
The OpenSRS Domains Pro module allows you to register, renew and transfer domains from an ever-expanding selection of TLDs, including many new gTLDs. This module supports domain locking and WHOIS Privacy for select TLDs, as well as WHMCS Domain Sync.
High-performance Domain Availability Checks using Hexonet's registrar API
The ISPAPI Registrar Module connects WHMCS to your HEXONET account.
ZA Domains CO.ZA WHMCS Module - Free Module for CO.ZA Domain Resellers and Domain Registrars
Quickly update your WHMCS domain pricing list