Clients ask for “WhatsApp on the website” all the time. Before you install the first plugin you find, run it through this checklist. It takes ten minutes and saves a painful migration later.
Integration
Uses Meta’s official WhatsApp Cloud API, not automation of the WhatsApp app (that risks a ban)
Webhook validates the X-Hub-Signature-256 header
Access tokens are stored encrypted, not in plain wp_options
Performance
Sends messages through a queue (Action Scheduler) instead of during checkout
Loads its front-end scripts only where the widget is shown
Uses custom tables with indexes for message history, not thousands of postmeta rows
WooCommerce
Declares HPOS compatibility
Reads order data for real automations (status updates, abandoned carts), not just a product-page button
Extensibility
Exposes actions, filters and REST endpoints so you can extend it without editing core files
Privacy and cleanup
Registers personal data exporters and erasers for GDPR requests
Offers an option to remove its data on uninstall
Maintenance
Updated in the last few months
Supports current PHP and WordPress versions
Support questions get answered
Cost
You know the yearly total: plugin licence + any platform fee + per-agent fees + markup on Meta’s per-message charges
If the client only needs a chat button, a free click-to-chat plugin passes most of this easily. If they need a team inbox, order messages or cart recovery, you need an API plugin, and this checklist matters a lot more.
We put nine popular options side by side, with pricing and a feature table: WhatsApp plugins for WordPress compared
How these plugins work under the hood: read on Hashnode
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