February 9, 2024

Sending in a payload that contains an unrecognized property will now return a 400 Bad Request response.

January 25, 2024

Clarification in the API docs that userId can be used in a Send event request.

November 6, 2023

We added a new endpoint for querying custom contact properties: /v1/contacts/customFields

October 30, 2023

Our official JavaScript/TypeScript SDK is now available!

October 12, 2023

We now accept dates as a custom contact property type. View the available formats.