Retrieve aggregated warmup statistics across all email accounts.

Returned Metrics:

• isInbox: Emails that landed in inbox (positive signal)
• isSaved: Emails that landed in spam/promotions
• isNotDelivered: Emails that failed to deliver
• warmUpId: Unique warmup session identifier
• accountId: Email account ID

Filtering:

• Returns stats for all accounts by default
• Use query parameter accountIds (comma-separated) to filter specific accounts

Use Cases:

• Monitor warmup health across all accounts
• Identify accounts with deliverability issues
• Track overall sender reputation building progress

Response Format: Returns object with account IDs as keys, each containing aggregated stats.

{
  "message": "Warmup statistics retrieved successfully",
  "data": {
    "65a1b2c3d4e5f6789abcdef0": {
      "accountId": "65a1b2c3d4e5f6789abcdef0",
      "warmUpId": "ABCD1234",
      "isInbox": 145,
      "isSaved": 3,
      "isNotDelivered": 2
    },
    "65a1b2c3d4e5f6789abcdef1": {
      "accountId": "65a1b2c3d4e5f6789abcdef1",
      "warmUpId": "EFGH5678",
      "isInbox": 89,
      "isSaved": 1,
      "isNotDelivered": 0
    }
  }
}