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

# Prerequisite

This section covers the prerequisites for sending an email campaign.

### 1. Configure Email Provider.

An Email Provider needs to be configured in Castled to send email campaigns. Refer [Email Provider](https://docs.castled.io/settings/channel-configs/email-provider/email-overview.md) section for configuring  the email provider.

### 2. Configure Physical Address.

The anti-spam legislation of several countries requires organizations sending marketing emails to include a valid, physical postal address. Refer [Physical address](https://docs.castled.io/settings/physical-address/create-address.md) section for configuring the phyiscal address in Castled.


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