> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mailofly.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Bounces and suppressions

# Deliverability, Bounces, and Suppressions

Protecting your domain reputation is critical for ensuring your emails land in the inbox. Mailofly automatically monitors bounces and maintains a suppression list to shield your domain from spam penalties.

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## Hard Bounces vs. Soft Bounces

| Bounce Type     | Description                                                                                        | Mailofly Action                                                                                                                   |
| :-------------- | :------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------------------------------------------------------------------- |
| **Hard Bounce** | Permanent failure (e.g. email address does not exist, mailbox was deleted, or domain is invalid).  | Immediately added to your organization's **Suppression List**. Future attempts to send to this address are blocked automatically. |
| **Soft Bounce** | Temporary failure (e.g. recipient mailbox is full, server temporarily down, or message too large). | Retried according to exponential backoff rules over 48 hours. If permanently undeliverable, it is marked as failed.               |

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## Spam Complaints

When a user clicks "Report as Spam" or "Move to Junk" in Gmail, Yahoo, or Outlook, an automated Feedback Loop (FBL) notice is received by Mailofly:

1. The message status updates to `complained`.
2. An `email.complained` webhook event is emitted.
3. The recipient is automatically added to your suppression list to prevent future sends.

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## Managing Your Suppression List

You can view, search, and manage suppressed email addresses:

1. Open **Audience** → **Suppressions** in the dashboard.
2. Review the reason (Hard bounce, Spam complaint, or Manual unsubscribe).
3. If an address bounced due to a temporary DNS glitch or was resolved with the customer, click **Remove Suppression** to restore sending access.


## Related topics

- [Email Suppressions](/sending/email-suppressions.md)
- [Introduction](/sending/introduction.md)
- [Email Bounces](/sending/email-bounces.md)
- [Migration Guide](/audience/migration-guide.md)
- [Deliverability Insights](/sending/deliverability-insights.md)