# Sieve

### Sieve rule to automatically sort mails by alias

This Sieve rule filters mails by the mail alias they were sent to.
Specifically, it uses a custom suffix separated by a dot: `.(.*)`
It automatically creates a directory for that alias and moves the mail there.
Then it stops processing.

```
require ["fileinto","mailbox","regex","variables"];

if allof (header :regex "to" "^<name>.([0-9a-zA-Z]*)@<domain.tld>$")
{
        set :lower :upperfirst "target" "${1}";
        fileinto :create "${target}";
        stop;
}
```