curl --request GET \
  --url https://www.dench.com/api/v1/email/campaigns/{campaignId} \
  --header 'Authorization: Bearer <token>'

{
  "_id": "ecmp_abc123",
  "_creationTime": 1765526395000,
  "organizationId": "org_abc123",
  "name": "Q2 outreach",
  "status": "sending",
  "sendingIdentityId": "esi_abc123",
  "templateId": "etpl_abc123",
  "subjectSnapshot": "Hi {{firstName}}",
  "htmlSnapshot": "<p>Hi {{firstName}}, saw your work at {{company}}.</p>",
  "fromEmailSnapshot": "founder@example.com",
  "createdBy": "user:us_xyz789",
  "totalRecipients": 120,
  "queuedCount": 70,
  "sendingCount": 0,
  "sentCount": 50,
  "deliveredCount": 48,
  "openedCount": 12,
  "clickedCount": 3,
  "bouncedCount": 1,
  "complainedCount": 0,
  "failedCount": 0,
  "suppressedCount": 2,
  "unsubscribedCount": 0,
  "maxRecipients": 0,
  "batchSize": 50,
  "createdAt": 1765526395000,
  "updatedAt": 1765526460000
}