---
description: 'Using Delta Chat with a Butter Box'
sidebar_position: 4
---

# Private Messenger

With the Private Messenger service, you can exchange secure messages with
people you know. [Delta Chat](https://delta.chat/) is a messaging app that
uses email protocols to exchange messages. When used through a Butter Box,
people who create accounts on the same Butter Box can send messages to each
other without the internet.

Think of the Butter Box like a local post office. Whenever you connect to
the Box’s network, your Delta Chat app can send outgoing messages and sync
to receive any new ones waiting for you.

