comms

Conversation threads and messages that attach to any entity (contact, company, deal, ticket, task, or project) via a polymorphic relationship.

Tables

threads

Column	Type	Description
id	uuid	Primary key, auto-generated
org_id	uuid	References organizations. CASCADE on delete
entity_type	text	What this thread attaches to. Checked against allowed values
entity_id	uuid	ID of the related entity. No FK enforced for polymorphism
subject	text	Optional thread subject line
channel	channel_type	Communication channel (email, sms, etc.)
is_closed	boolean	Whether the thread is closed, defaults to false
created_at	timestamptz	Row creation time
updated_at	timestamptz	Auto-updated on change via trigger
metadata	jsonb	Freeform JSON, defaults to empty object

Allowed entity_type values: contact, company, deal, ticket, task, project.

messages

Column	Type	Description
id	uuid	Primary key, auto-generated
org_id	uuid	References organizations. CASCADE on delete
thread_id	uuid	References threads. CASCADE on delete
author_id	uuid	References users. SET NULL on delete
contact_id	uuid	References contacts. SET NULL on delete
direction	message_direction	Inbound, outbound, or internal. Defaults to 'internal'
body	text	Plain text message body (required)
html_body	text	Rich HTML version of the message body
external_id	text	ID from external system, e.g. email Message-ID
sent_at	timestamptz	When the message was sent, defaults to now()
created_at	timestamptz	Row creation time
updated_at	timestamptz	Auto-updated on change via trigger
metadata	jsonb	Freeform JSON, defaults to empty object

Enums

message_direction

Value	Description
inbound	Message received from an external party
outbound	Message sent to an external party
internal	Internal note or comment

channel_type

Shared with the support skill. Defined with a guard (CREATE TYPE IF NOT EXISTS pattern) so it works whether or not support is installed.

Value	Description
email	Email channel
sms	SMS / text message
chat	Live chat or messaging
phone	Phone call
social	Social media

Row-Level Security

Both tables have RLS enabled and scoped to org_id via get_user_org_id(). SELECT, INSERT, and UPDATE are open to all org members. DELETE requires admin privileges via is_admin().

Dependencies

• crm (organizations, users, contacts)

Example Queries

-- Full conversation history for a contact
SELECT
  th.entity_type,
  th.entity_id,
  m.direction,
  coalesce(u.full_name, c.first_name || ' ' || coalesce(c.last_name, '')) AS sender,
  m.body,
  m.sent_at
FROM threads th
JOIN messages m ON m.thread_id = th.id
LEFT JOIN users u ON u.id = m.author_id
LEFT JOIN contacts c ON c.id = m.contact_id
WHERE th.entity_type = 'contact' AND th.entity_id = '<contact_id>'
ORDER BY m.sent_at ASC;

-- Recent inbound messages across all threads
SELECT
  th.entity_type,
  th.entity_id,
  th.subject,
  th.channel,
  m.body,
  m.sent_at,
  c.first_name || ' ' || coalesce(c.last_name, '') AS from_contact
FROM messages m
JOIN threads th ON th.id = m.thread_id
LEFT JOIN contacts c ON c.id = m.contact_id
WHERE m.direction = 'inbound'
ORDER BY m.sent_at DESC
LIMIT 50;

-- Threads with no reply (inbound message but no outbound response)
SELECT
  th.id AS thread_id,
  th.entity_type,
  th.entity_id,
  th.subject,
  th.channel,
  min(m.sent_at) AS first_message_at
FROM threads th
JOIN messages m ON m.thread_id = th.id
WHERE th.is_closed = false
  AND m.direction = 'inbound'
  AND NOT EXISTS (
    SELECT 1 FROM messages m2
    WHERE m2.thread_id = th.id
      AND m2.direction = 'outbound'
      AND m2.sent_at > m.sent_at
  )
GROUP BY th.id, th.entity_type, th.entity_id, th.subject, th.channel
ORDER BY first_message_at ASC;

-- Message volume by channel and direction (last 30 days)
SELECT
  th.channel,
  count(*) FILTER (WHERE m.direction = 'inbound') AS inbound,
  count(*) FILTER (WHERE m.direction = 'outbound') AS outbound,
  count(*) FILTER (WHERE m.direction = 'internal') AS internal,
  count(*) AS total
FROM messages m
JOIN threads th ON th.id = m.thread_id
WHERE m.sent_at >= now() - interval '30 days'
GROUP BY th.channel
ORDER BY total DESC;

-- Open threads per entity type with message counts
SELECT
  th.entity_type,
  count(DISTINCT th.id) AS open_threads,
  count(m.id) AS total_messages,
  max(m.sent_at) AS last_activity
FROM threads th
LEFT JOIN messages m ON m.thread_id = th.id
WHERE th.is_closed = false
GROUP BY th.entity_type
ORDER BY open_threads DESC;