Monitor and track the content updates of any webpage/RSS/API, and receive notifications through sound/email/DingTalk group/WeChat Work group or custom Webhook.
The use cases are very diverse, such as detecting hot topics, product prices, likes and comments on works, bidding auctions, news forums, grabbing orders, etc.
Official website installation (https://courier.toptopn.com/)
User guide (https://courier.toptopn.com/guide.html)