MailOdds

Suppression

Email Suppression List

Protect your sender reputation by never sending to bad addresses. Auto-suppress hard bounces and complaints, bulk-manage suppressions via API, and maintain a full audit trail for compliance.

6 API Endpoints

Complete Suppression Management

Add, remove, check, audit, and cross-reference suppressions. Integrated with bulk validation and the sending API.

Bulk Add and Remove

Import and manage thousands of suppressed addresses at once via API or dashboard upload. POST arrays of addresses with reason codes in a single request.

Email and Domain Types

Suppress individual addresses or entire domains. Block all mail to a company with one entry. Both types are checked during validation and sending.

Auto-Suppression

Hard bounces and spam complaints are automatically added to your suppression list in real time. No manual intervention required to protect your sender reputation.

Audit Trail

Every suppression change is logged with timestamp, source (manual, auto-bounce, complaint), and reason. Full compliance trail for GDPR and CAN-SPAM audits.

Suppression Stats

Dashboard showing total suppressions, breakdown by type (bounce, complaint, manual), and growth trends over time. Spot list hygiene issues before they escalate.

Cross-Reference

Match your sending list against your suppression list to catch addresses that should not receive mail. Prevent accidental sends to previously bounced or complained recipients.

Quick Start

Add Suppressions in One Request

POST an array of addresses with reason codes. The API handles deduplication and audit logging automatically.

POST /v1/suppression
curl -X POST https://api.mailodds.com/v1/suppression \
  -H "X-Api-Key: mo_live_..." \
  -H "Content-Type: application/json" \
  -d '{
    "suppressions": [
      {
        "email": "bounced@example.com",
        "reason": "hard_bounce",
        "source": "manual"
      },
      {
        "domain": "defunct-company.com",
        "reason": "domain_block",
        "source": "manual"
      }
    ]
  }'
200 OK 12ms
{ "added": 2, "duplicates": 0, "errors": 0 }
Automatic Protection

Bounces and Complaints Are Suppressed Instantly

When our inbound processing system detects a hard bounce or spam complaint, the address is added to your suppression list within seconds. No manual CSV uploads, no waiting for daily reports. Your next send is already protected.

Hard bounces suppressed in real time
SMTP 5xx responses trigger immediate suppression
Complaint-based suppression
Feedback loop reports from ISPs are processed automatically
Synced across all services
Validation, sending, and campaigns all respect the same list
1

Bounce Detected

Inbound processor receives SMTP bounce notification from the receiving server.

2

Classified and Logged

Bounce type identified (hard, soft, complaint). Audit record created with full context.

Address Suppressed

Address is blocked from all future sends and flagged in validation results.

Frequently Asked Questions

Stop losing revenue to typos, bots, and blind spots.

From typo correction to storefront attribution. One platform, one API, nothing stitched together.

No credit card required Setup in 2 minutes