List inboxes you can query
Returns the email and phone/SMS inboxes available to the credential, for use
as the channelId on the messages and analytics endpoints.
With delegate-token auth (inboxes:* scope) results are limited to
inboxes the authenticated user can reach, and each entry carries access:
owned when the user is a member of the inbox (directly or through a team),
monitored when it is another user’s private inbox that the caller is
permitted to monitor. scope filters on that value.
Monitoring requires the conversations.monitor_admin permission on the
caller and conversations.monitor_access on the inbox owner’s role, so a
caller without those permissions sees only owned inboxes.
API keys and partner tokens are company-scoped and carry no user identity, so
they return every inbox in the company, omit access, and reject scope
with a 400.