# `PhoenixKit.Install.MailerConfig`
[🔗](https://github.com/BeamLabEU/phoenix_kit/blob/v1.7.165/lib/phoenix_kit/install/mailer_config.ex#L1)

Handles mailer configuration for PhoenixKit installation.

This module provides functionality to:
- Configure development mailer with Swoosh.Adapters.Local
- Add production mailer templates for various providers
- Generate appropriate notices for mailer setup

# `add_mailer_configuration`

Adds PhoenixKit mailer configuration for development and production.

Now supports both delegation mode and built-in mode:
- **Delegation mode**: Configure PhoenixKit to use parent app's mailer
- **Built-in mode**: Configure PhoenixKit's own mailer (legacy)

## Parameters
- `igniter` - The igniter context

## Returns
Updated igniter with mailer configuration and notices.

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*Consult [api-reference.md](api-reference.md) for complete listing*