Members.

Authentication

Use a key with members:read. The endpoint takes no body or pagination parameters and returns { "data": [...] }.

Member fields

Field	Type	Meaning
email	string	Member’s email address.
name	string	Member’s display name.
role	string	admin or member in this organization.
joined_at	string	Membership timestamp.

This is a read endpoint. It does not create invitations, change roles, or manage mailboxes. Those actions belong in the console.

Errors

Missing members:read returns HTTP 403, insufficient_scope. Invalid keys return 401, suspended organizations return 403, and rate limits return 429. These use account endpoint errors, not Postmark’s ErrorCode format.