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Knock

Knock lets you send and manage notifications across email, push, SMS, and in-app from one API—without building the infrastructure yourself.

Supported syncing

TypeDescriptionSupported Sync ModesAPI Reference
UsersSync data from any source to Knock usersUpsertUsers docs
ObjectsSync data from any source to Knock objectsUpsertObjects docs
AudiencesSync data from any source to Knock audiencesAdd, RemoveAudiences docs

For more information about sync modes, refer to the sync modes docs.

Connect to Knock

Go to the Destinations overview page and click the Add destination button. Select Knock and click Continue. You can then authenticate Hightouch to Knock.

Enter the following fields into Hightouch:

  • Secret API key: You can find this in the Knock dashboard under API keys.
  • (Optional) Service token: This is only required if you plan to sync audiences. You can find this in the Knock dashboard under Service tokens.

Sync configuration

Once you've set up your Knock destination and have a model to pull data from, you can set up your sync configuration to begin syncing data. Go to the Syncs overview page and click the Add sync button to begin. Then, select the relevant model and the Knock destination you want to sync to.

Syncing users

Sync data from any source to Knock users.

Record matching

To match rows from your model to users in Knock, you need to select the model column that contains values that match the ID field. Refer to the record matching docs for more information.

Field mapping

Hightouch lets you sync user fields via field mapping. You can map data from any of your model columns to default and custom user fields. If you send data for a custom field that doesn't exist, Hightouch adds the field. Ensure your model's columns have the same data types as the fields you want to sync to.

Delete behavior

The delete behavior you select dictates what to do when a row no longer appears in your model's query results. You have the following options:

BehaviorDescription
Do nothingKeep the user in Knock with all its synced fields
DeleteDelete the synced users from Knock

Syncing objects

Sync data from any source to Knock objects.

Record matching

To match rows from your model to objects in Knock, you need to select the model column that contains values that match the ID field. Refer to the record matching docs for more information. You can also optionally map the following fields:

  • Email
  • Phone number

Delete behavior

The delete behavior you select dictates what to do when a row no longer appears in your model's query results. You have the following options:

BehaviorDescription
Do nothingKeep the object in Knock with all its synced fields
DeleteDelete the synced objects from Knock

Syncing audiences

Sync data from any source to Knock audiences.

Record matching

To match rows from your model to audiences in Knock, you need to select the model column that contains values that match the ID field. Refer to the record matching docs for more information.

Field mapping

Hightouch lets you sync audience fields via field mapping. You can map data from any of your model columns to the default audience fields. Ensure your model's columns have the same data types as the fields you want to sync to.

Tips and troubleshooting

Common errors

To date, our customers haven't experienced any errors while using this destination. If you run into any issues, please don't hesitate to . We're here to help.

Live debugger

Hightouch provides complete visibility into the API calls made during each of your sync runs. We recommend reading our article on debugging tips and tricks to learn more.

Sync alerts

Hightouch can alert you of sync issues via Slack, PagerDuty, SMS, or email. For details, please visit our article on alerting.

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Last updated: Apr 17, 2026

On this page
  • Supported syncing
  • Connect to Knock
  • Sync configuration
  • Syncing users
  • Syncing objects
  • Syncing audiences
  • Tips and troubleshooting
  • Common errors
  • Live debugger
  • Sync alerts

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