Guides from client work
Step-by-step guides written from my own client work and checked against the official documentation. Each one says when it was last reviewed, and what I sell when it matters.
8 min
Which PayPal module to use in WHMCS today, how account linking replaced API keys, what happens to PayPal Subscriptions, IPN versus webhooks, refunds, sandbox testing and the documented errors.
Shahid Malla
Oct 12, 2026
7 min
How the built-in WHMCS affiliate program works: the settings to enable, percentage and fixed commissions, per-product and per-affiliate overrides, payout delays, referral cookies, fraud controls and its limits.
Shahid Malla
Oct 12, 2026
8 min
The WHMCS PHP, ionCube Loader and MySQL versions for 9.1, 9.0 and 8.13, read on the official docs on 12 October 2026, plus the System Health checks and what to confirm before an upgrade or a server move.
Shahid Malla
Oct 12, 2026
8 min
How WHMCS configurable options work according to the current docs: groups, option types, pricing, what a provisioning module receives, the difference from custom fields, upgrades and the country and city question.
Shahid Malla
Oct 12, 2026
8 min
The WHMCS invoice template checked against the official docs: viewinvoice.tpl and invoicepdf.tpl, the logo, Pay To Text, child themes, numbering, proforma invoices, tax IDs, custom fields and testing.
Shahid Malla
Oct 10, 2026
8 min
Domain registrar setup in WHMCS, checked against the official documentation: activating a module, TLD pricing and terms, the lookup provider, domain sync, registration on payment, transfers, premium domains and errors.
Shahid Malla
Oct 10, 2026
8 min
What a WHMCS Proxmox integration has to do, which modules the WHMCS Marketplace lists, how a custom module calls the Proxmox VE API with a scoped token, and what to check before you choose.
Shahid Malla
Oct 10, 2026
7 min
A plain explanation of WHMCS for founders: what it automates, a WHMCS vs cPanel and WHM comparison table, who needs it and who does not, its limits, and how the monthly license works.
Shahid Malla
Oct 10, 2026
6 min
What a custom WHMCS module costs: hours times rate, five ready-made module prices and twenty fixed-price offers read on 12 October 2026, what each module type involves, and what cheap quotes leave out.
Shahid Malla
Oct 9, 2026
8 min
How to bill a SaaS or software product with WHMCS: plans and cycles, provisioning through a custom module or the Software Licensing addon, upgrades, usage charges, cancellations, dunning and when to use something else.
Shahid Malla
Oct 9, 2026
9 min
How to add a live chat widget to WHMCS with a hook that survives updates, identify logged-in clients safely, connect chats to tickets, and avoid the usual breakages.
Shahid Malla
May 29, 2026
8 min
WHMCS has no built-in Redis cache, and WHMCS tells you to disable OPcache. What its documentation recommends for a slow install: MySQL settings, logging, cron timing and two configuration switches.
Shahid Malla
Feb 9, 2026
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