Function after_fetch 

pub fn after_fetch(
    config: &Config,
    account: &Account,
    password: &str,
    new: &[PathBuf],
    first: bool,
) -> Done

After a fetch of account’s inbox (new: its arrivals, oldest first, none at all when only something waits): those still unread, and those an earlier look left waiting (a failure, another device’s mark), filtered on the server, each marked first. Nothing on its first fetch.