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Suppression Lists

Protect your sender reputation by controlling who you never email.

Block specific emails, domains, tags, or segments from receiving your campaigns and automations. Auto-suppress hard bounces and complaint addresses, or build manual suppression rules to stay compliant and protect deliverability.

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Multi-Level Suppression

Suppress at the level that makes sense. Block a single address, an entire domain, subscribers with a specific tag, or a complete segment. Suppression rules are evaluated at send time so no emails slip through.

  • Suppress by email address, domain, tag, or segment
  • Suppression rules checked at send time for every campaign and automation
  • Audit log of all suppressed sends for compliance reporting
  • Bulk import suppression lists via CSV

Automatic Suppression

Hard bounces and spam complaints are automatically suppressed to protect your sender reputation. Configure SMTP-level suppression thresholds to auto-block addresses that fail verification checks.

Automatic Suppression
Auto-suppress hard bounces and spam complaints
Syntax and MX validation on every email (free for all plans)
Configurable SMTP failure thresholds per organization
Re-enable suppressed addresses if they become valid again

Compliance and Control

Stay compliant with anti-spam regulations and honor opt-out requests automatically. Suppression lists work alongside your unsubscribe handling and GDPR data controls for complete audience governance.

Compliance and Control
Honors CAN-SPAM, GDPR, and CASL requirements
Works alongside automatic unsubscribe processing
Organization-scoped rules — each tenant manages their own suppressions

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Send beautiful emails that drive results.

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