> For the complete documentation index, see [llms.txt](https://docs.emaillabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emaillabs.io/en/email/email-api/settings/smtp-accounts/headers/configuring-headers.md).

# Configuring Headers

To configure Headers for a specific SMTP server, follow these steps:

* Go to the SMTP server settings.
* Locate the Headers option and toggle the switch to enable it.

<figure><img src="/files/xu2Mo6GjTC5OUjs079H7" alt=""><figcaption></figcaption></figure>

To configure headers, select the type of send that matches the nature of the message:

* **No type:** The “precedence” header will not be added. This option is ideal for general email messages without a specific designation.
* **Transactional send:** This header is used for transactional messages sent to a single recipient, such as registration confirmations or password reminders.
* **Bulk marketing send:** Designed for messages sent to multiple recipients, such as newsletters or promotional offers.

<figure><img src="/files/HsG7cyjPTM5PyZNpiAJ2" alt=""><figcaption></figcaption></figure>

After selecting the type of send, click ‘Save’ to apply the settings.