> For the complete documentation index, see [llms.txt](https://docs.emaildelivery.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emaildelivery.com/docs/backend-administration/purging-mail-queues.md).

# Purging mail queues

{% hint style="info" %}
**Purge all undelivered mail**

You can purge all undelivered broadcast, funnel, and transactional mail in the backend customer account table.
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**Click customers -> Customer Accounts**

<div align="left"><figure><img src="/files/CdfexL7ABMcNr6GkM2NI" alt="" width="368"><figcaption></figcaption></figure></div>

**Check the customer account whose mail you want to purge:**

<div align="left"><figure><img src="/files/eYwmQGaJ8uAXINO0oxBk" alt="" width="283"><figcaption></figcaption></figure></div>

**Use the action menu to purge mail queues:**

![](/files/kvDy2iCoZ1Krsf590g0M)

{% hint style="warning" %}
**The most reliable way to cancel a broadcast in progress is always to purge broadcast mail from the backend customer account menu.**
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{% hint style="danger" %}
Clicking "Cancel" in the Actions button from the broadcast page will cancel a broadcast sent through Velocity MTA, but may not be able to cancel a broadcast sent through an API or SMTP Relay connection depending on the state of the data transfer at that time.
{% endhint %}

![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/16/9664ba12-6734-4a10-ba61-0a8d157d34c8.png)

{% hint style="info" %}
To manage Velocity MTA mail queues see the [MTA documentation](/docs/velocity-mta-continuing-education/complaint-feedback-loops.md).
{% endhint %}