Knock

User leaves a comment on a shared asset.

Application triggers a 'comment_created' event to Knock.

Knock workflow checks if the recipient is currently online.

If online, send only an in-app toast; if offline for 5 mins, batch multiple comments into one summary email.

System detects login from a new IP.

Knock triggers a push notification immediately.

If the push is not 'delivered' within 30 seconds, Knock automatically sends an SMS fallback.

Log the successful delivery across both channels for audit.

User signs up; identify call is made to Knock.

Workflow waits 2 days, then checks if user has 'created_first_project'.

If false, send a helpful 'How-to' email.

If true, wait until day 7 and send an advanced features guide.

Stripe webhook triggers a payment event.

Event is forwarded to Knock with invoice metadata.

Knock applies the 'Billing' template and routes to the user's preferred email address.

Store the notification record in Knock for customer support visibility.

A CRON job identifies relevant items for 50k users.

Events are sent to Knock with item lists.

Knock uses a 'batch' step to collect items over 7 days.

A single Liquid-templated email is generated and sent on Monday morning.

Sensor detects high temperature.

Backend sends 'temp_alert' event to Knock with 'critical' severity.

Knock routes to the 'On-call' Slack channel and simultaneously sends SMS to the site manager.

Escalation logic triggers a phone call if not acknowledged in 10 minutes.

Agent updates a support ticket status.

Knock checks user preferences for 'Support Updates'.

If the user has 'SMS' disabled but 'In-App' enabled, send only the in-app message.

If it is a 'high priority' update, bypass preferences and send an email.