API Changelog
Stay up-to-date with changes to our API.
Improvement: data variables are now optional in the Send transactional email endpoint. Read more
New: a new Idempotency-Key header when sending events.
New: a new Idempotency-Key header when sending transactional emails.
New: a new endpoint for listing transactional emails and their data variables.
New: new endpoints for creating contact properties and listing contact properties.
Depcrecation: the List custom fields endpoint is now deprecated in favor of the new List contact properties endpoint.
New: we added description to mailing list objects in the List mailing lists endpoint.
Improvement: the maximum payload size for the transactional endpoint has been increased from 1MB to 4MB, allowing for more or larger attachments.
New: our new Nuxt module is now out!
New: we added an isPublic attribute to mailing list objects in the List mailing lists endpoint.
New: there’s a new addToAudience parameter in the Send transactional email endpoint can add contacts to your audience.
New: support for our new mailing lists feature.
You can now add contacts to and remove contacts from mailing lists in the Create contact, Update contact and Send event endpoints.
There is also a new endpoint for retrieving your mailing lists.
New: you can now Find contacts by userId.
New: you can now include event properties in requests to the Send event endpoint.
Improvement: we removed behavior that returned a 400 Bad Request response if an unrecognized property was added to Contact endpoints.
Improvement: sending in a payload that contains an unrecognized property will now return a 400 Bad Request response.
Clarification in the API docs that userId can be used in a Send event request.
New: we added a new endpoint for querying custom contact properties.
Our official JavaScript/TypeScript SDK is now available!
New: we now accept dates as a custom contact property type. View the available formats.