List email messages synced from your firm's connected mailboxes, newest first, 25 per page:
sender, subject, preview, received time, linked client, read flag and the AI classification
(category, priority, sentiment, summary). Members without the whole-book role see only email
linked to clients assigned to them, plus email not yet linked to a client. Filter by client_id,
priority (comma-separated: CRITICAL, HIGH, NORMAL, LOW) or category (comma-separated: INQUIRY,
INSTRUCTION, COMPLAINT, UPDATE, SOCIAL, SPAM).