A SMTP server that can be embedded into another program

This library provides a simple embeddable SMTP server. The server uses blocking IO and a threadpool.

Examples

```rust use mailin_embedded::{Server, SslConfig, Handler};

[derive(Clone)]

struct MyHandler {} impl Handler for MyHandler{}

let handler = MyHandler {}; let mut server = Server::new(handler);

server.withname("example.com") .withssl(SslConfig::None)? .withaddr("127.0.0.1:25")?; server.serveforever(); ```