OpenWA: Send Linux Server Alerts to WhatsApp with a Free Self-Hosted API

Written By
T
TecMint
Oct 13, 2026

Paying a WhatsApp API provider just to send server alerts becomes expensive as your scripts send more messages. Here’s how to self-host OpenWA on Linux with Docker Compose, link a number, and send messages and webhooks through its REST API.

Imagine a backup job fails at 2 AM on one of your servers, and the alert email lands in a mailbox nobody checks until morning, because email is where every other notification goes too.

T

TecMint

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