Suppressions
Manage bounced, complained, and unsubscribed email addresses.
Manage email addresses that should not receive messages to protect your sender reputation.
What are Suppressions?
Suppressions are blocked addresses. When an address is suppressed, all future emails are automatically prevented from sending.
| Type | Description |
|---|---|
| Bounces | Email permanently failed (invalid address) |
| Complaints | Recipient marked as spam |
| Unsubscribes | Recipient opted out via link |
Why Suppressions Matter
High bounce and complaint rates result in:
- Emails going to spam folders
- Temporary sending blocks
- Permanent blacklisting
Best Practice: Keep bounce rate under 2% and complaint rate under 0.1%.
How It Works
Step 1: Automatic Detection
When an email bounces, generates a complaint, or someone unsubscribes, the address is automatically suppressed.
Step 2: Sending Blocked
Future sends to suppressed addresses are blocked at the API level before delivery is attempted.
Step 3: Review & Manage
View all suppressed addresses in your dashboard. Remove addresses if suppressed in error.
Managing Suppressions
- Go to Suppressions in the sidebar
- View blocked addresses with reason and date
- Search for specific addresses
- Remove suppressions to allow sending again
Tip: You can import a list of addresses to suppress proactively.
Safe to Remove
- User confirmed email is valid
- Temporary inbox issue resolved
- User re-subscribed intentionally
Risky to Remove
- Hard bounce (invalid address)
- Spam complaint
- Unknown or unverified request
Related Features
- Email Validation - Validate before sending
- Lists & Contacts - Organize your audience