> 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/frontend-settings/header-template.md).
# Header template
{% hint style="warning" %}
The header template tab is only applied to mail sent using Velocity MTA.
{% endhint %}
{% hint style="info" %}
You can modify your Velocity MTA header order and header content here, intended to be adjusted only by those with a deep understanding of MTA administration.
{% endhint %}
{% hint style="info" %}
**Alternative From Name and Subject encodings**
Intended to be adjusted only by those with a deep understanding of MTA administration.
{% endhint %}