# Suppression List

A suppression list is a list of email addresses that should not receive marketing communications. This list typically includes unsubscribed users, bounced emails, or customers who have opted out of receiving further emails. \
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By maintaining a suppression list, businesses ensure they comply with privacy regulations and avoid sending unwanted emails to recipients.

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Suppression list
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The **Suppression List** option helps ensure a better email delivery rate by automatically managing contacts that may cause issues, such as bounces or spam complaints. \
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With this feature, contacts that repeatedly trigger delivery problems are automatically added to the suppression list and excluded from receiving future emails.

#### Enable Suppression List

By enabling the **Suppression List**, Retainful will automatically add contacts to the suppression list if they have repeated bounces or spam complaints, ensuring that these contacts do not receive any more emails.

#### Suppress Contacts Based on the Bounce Threshold

You can set a threshold for the number of bounces after which a contact will be added to the suppression list. For example:

> You can set a threshold for the number of bounces after which a contact will be added to the suppression list.\
> \
> **EXAMPLE 1**<br>
>
> * **Suppress contacts if emails bounce at least**:
>   * Set the threshold to a specific number of bounce events (e.g., 2 or 3).
>
> \
> **EXAMPLE 2**<br>
>
> * If you set the bounce threshold to **3** and an email fails to be delivered three times, the customer will automatically be added to the suppression list and will no longer receive emails from you.

**How it Works**

* Retainful will track each email sent to a contact and monitor delivery attempts.
* If an email bounces or results in a spam complaint more than the set threshold, the contact will be added to the suppression list.
* Once added, these contacts will not receive future marketing or transactional emails, helping to improve your email deliverability rates.

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