> For the complete documentation index, see [llms.txt](https://developers.docstudio.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.docstudio.com/api-documentation/envelope.md).

# Envelope

* [Envelope Structure](https://support.docstudio.com/docstudio-docs/docstudio-for-developers/api-documentation/envelope/envelope-structure)
* [Envelope Forms](https://support.docstudio.com/docstudio-docs/docstudio-for-developers/api-documentation/envelope/envelope-forms)
* [Send Envelope](https://support.docstudio.com/docstudio-docs/docstudio-for-developers/api-documentation/envelope/send-envelope)
* [Envelope Metadata](https://support.docstudio.com/docstudio-docs/docstudio-for-developers/api-documentation/envelope/envelope-metadata)
* [Fill Envelope](https://support.docstudio.com/docstudio-docs/docstudio-for-developers/api-documentation/envelope/fill-envelope)

{% hint style="info" %}
**Looking for user documentation?**

If you want to learn how to use DocStudio in the interface, open the user documentation. It explains how to sign in, create and send envelopes, work with templates, sign documents, manage mailboxes, and configure account settings.

[Open DocStudio Knowledge Base](https://support.docstudio.com/)
{% endhint %}