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

# Overview

Missive developer tools: REST API, UI integrations, webhooks, and custom channels for full customization.

Missive provides a comprehensive suite of developer tools designed to empower businesses to fully customize and enhance their experience.

## Rest API

Use the Rest API to enrich Missive conversations with content from anywhere: commits from GitHub, transactions from Stripe, exceptions from Rollbar, events from your own servers.

Additionally, you can automate various tasks, including the creation and sending of drafts, synchronization of contacts, and more.

Example use cases:

* GitHub and Heroku notifications merged in a single conversation
* Developer notifications automatically added to Missive via the API

[Learn more about the REST API →](/docs/developers/rest-api.md)

## UI / iFrame integrations

UI/iFrame integrations let you customize the interface and connect your own data or backend systems. Build custom panels that display your data and interact with Missive using the JavaScript API.

<div data-with-frame="true"><img src="https://3678999052-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FegxqkD7AXM4n11rNf5qI%2Fuploads%2Fgit-blob-33e3cc26d5ce9637e83fd7e84cd7d28f85e537fe%2Fcustom%20integration%209d5d4ccff3874aa9379bd69ee6d25f016175f9047cd8781a949cc983e6a31ae0.png?alt=media" alt="Custom integration developed by an e-commerce platform" width="563"></div>

[Learn more about UI integrations →](/docs/developers/ui-iframe-integrations.md)

## Webhooks

Receive notifications about Missive events (incoming emails, label changes, etc.) as HTTP POST requests to your endpoint. Perfect for connecting Missive to your own systems or triggering automated workflows.

[Learn more about webhooks →](/docs/developers/webhooks.md)

## Custom channels

Integrate Missive with any communication channel or message source. Create incoming messages from live chat, SMS providers, ticketing systems, or any custom platform.

[Learn more about custom channels →](/docs/developers/custom-channels.md)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://missiveapp.com/docs/developers/readme.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.