# imap
[](https://crates.io/crates/imap)
[](https://docs.rs/imap/)
[](https://crates.io/crates/imap)
[](https://dev.azure.com/jonhoo/jonhoo/_build/latest?definitionId=11&branchName=master)
[](https://cirrus-ci.com/github/jonhoo/rust-imap)
[](https://codecov.io/gh/jonhoo/rust-imap)
[](https://deps.rs/repo/github/jonhoo/rust-imap)
This crate lets you connect to and interact with servers that implement the IMAP protocol ([RFC
3501](https://tools.ietf.org/html/rfc3501) and various extensions). After authenticating with
the server, IMAP lets you list, fetch, and search for e-mails, as well as monitor mailboxes for
changes. It supports at least the latest three stable Rust releases (possibly even older ones;
check the [CI results](https://travis-ci.com/jonhoo/rust-imap)).
To connect, use the [`connect`] function. This gives you an unauthenticated [`Client`]. You can
then use [`Client::login`] or [`Client::authenticate`] to perform username/password or
challenge/response authentication respectively. This in turn gives you an authenticated
[`Session`], which lets you access the mailboxes at the server.
The documentation within this crate borrows heavily from the various RFCs, but should not be
considered a complete reference. If anything is unclear, follow the links to the RFCs embedded
in the documentation for the various types and methods and read the raw text there!
Below is a basic client example. See the `examples/` directory for more.
```rust
extern crate imap;
extern crate native_tls;
fn fetch_inbox_top() -> imap::error::Result<Option<String>> {
let domain = "imap.example.com";
let tls = native_tls::TlsConnector::builder().build().unwrap();
// we pass in the domain twice to check that the server's TLS
// certificate is valid for the domain we're connecting to.
let client = imap::connect((domain, 993), domain, &tls).unwrap();
// the client we have here is unauthenticated.
// to do anything useful with the e-mails, we need to log in
let mut imap_session = client
.login("me@example.com", "password")
.map_err(|e| e.0)?;
// we want to fetch the first email in the INBOX mailbox
imap_session.select("INBOX")?;
// fetch message number 1 in this mailbox, along with its RFC822 field.
// RFC 822 dictates the format of the body of e-mails
let messages = imap_session.fetch("1", "RFC822")?;
let message = if let Some(m) = messages.iter().next() {
m
} else {
return Ok(None);
};
// extract the message's body
let body = message.body().expect("message did not have a body!");
let body = std::str::from_utf8(body)
.expect("message was not valid utf-8")
.to_string();
// be nice to the server and log out
imap_session.logout()?;
Ok(Some(body))
}
```
## Running the test suite
To run the integration tests, you need to have [GreenMail
running](http://www.icegreen.com/greenmail/#deploy_docker_standalone). The
easiest way to do that is with Docker:
```console
$ docker pull greenmail/standalone:1.5.9
$ docker run -t -i -e GREENMAIL_OPTS='-Dgreenmail.setup.test.all -Dgreenmail.hostname=0.0.0.0 -Dgreenmail.auth.disabled -Dgreenmail.verbose' -p 3025:3025 -p 3110:3110 -p 3143:3143 -p 3465:3465 -p 3993:3993 -p 3995:3995 greenmail/standalone:1.5.9
```
## License
Licensed under either of
* Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
at your option.
## Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in the work by you, as defined in the Apache-2.0 license, shall
be dual licensed as above, without any additional terms or conditions.