API referenceContacts

Export contacts as CSV

GET/contacts/export

Streams every contact (or a list’s members, or a segment’s matches) as CSV with one column per property.

Authorization

apiKey

AuthorizationBearer <token>

A project API key: Authorization: Bearer s0_…

In: header

list_id?string

Stamp0 lst_ identifier

Match^lst_[0-9A-Za-z]{16}$

segment_id?string

Stamp0 seg_ identifier

Match^seg_[0-9A-Za-z]{16}$

unsubscribed?string

Value in

curl -X GET "https://example.com/contacts/export"

Empty

Create or update contacts in bulk POST

Up to 1,000 contacts, matched by email. Each item succeeds or fails on its own.

Retrieve a contact GET

By `ct_` id or email address.