Overview Suppressions prevent SendGrid from sending to addresses that have bounced, reported spam, or unsubscribed. They protect your sender reputation but can also block legitimate re-sends if not managed correctly. --- Suppression Types | Type | Endpoint | What triggers it | Auto-added? | |------|----------|-----------------|-------------| | Hard Bounces | | Permanent delivery failure (invalid mailbox, domain doesn't exist) | Yes | | Soft Bounces | No management API — automatic retry only | Temporary failure (mailbox full, server down) — SendGrid auto-retries before suppressing | Yes, after…