# Developer Documentation

### Inserting custom content in emails

{% content-ref url="making-a-custom-add-on" %}
[making-a-custom-add-on](https://docs.acymailing.com/developers/making-a-custom-add-on)
{% endcontent-ref %}

### Executing custom code on AcyMailing triggers

{% content-ref url="making-a-custom-add-on/execute-custom-script-on-specific-acymailing-actions" %}
[execute-custom-script-on-specific-acymailing-actions](https://docs.acymailing.com/developers/making-a-custom-add-on/execute-custom-script-on-specific-acymailing-actions)
{% endcontent-ref %}

### Using AcyMailing code in custom script

{% content-ref url="custom-script-using-our-code" %}
[custom-script-using-our-code](https://docs.acymailing.com/developers/custom-script-using-our-code)
{% endcontent-ref %}

### REST API

{% content-ref url="<https://app.gitbook.com/s/CosW1WHkmfl9f2vUOzRX/>" %}
[Overview](https://app.gitbook.com/s/CosW1WHkmfl9f2vUOzRX/)
{% endcontent-ref %}