Zev here, I’m new with a quick question! I’m trying to build a Zap that when someone leaves a specific emoji reaction on a Slack message, it triggers. However, it seems the Zap is failing since the channel is external, meaning folks from other companies are inside.
Does anyone know a workaround here?
Best answer by CraigNet3
The biggest challenge is the Slack Request URL verification challenge which must be performed to activate the subscription. That cannot be done with the Webhooks trigger in Zapier. You may need to create a custom Zapier app to pull this off.
More info on the subscription process here:
Info on custom Zapier apps: