Simple webhook notifications

[stephenrjr]

Would love to see a light-weight webhook notification added for more modest alerting needs.

As an example, I use Synology Chat and have setup several incoming webhooks to notify specific chat channels with topical information. Here is an explanation of the webhook interface from Synology:

Using Integration in Synology Chat

[Bergruebe]

I would also like to see that. In my use case, I would connect it to my Uptime Kuma, so I have all up and down time in one place.

So it would be great, if it would be possible to add the latest ping or up-/download via a variable to the web hook.

[kinouzero]

Same, there isn't Slack integration so webhook can do the trick to send to Slack.

[alexjustesen]

Attaching #754 for lineage.

[rusty1281]

Just tested the webhook with Mattermost, but while the test is OK, there is still no payload delivered. Any news on the general webhook integration?

tnx!