Best way to parse string of email addresses

Question

So i am working with some email header data, and for the to:, from:, cc:, and bcc: fields the email address(es) can be expressed in a number of different ways:

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Answer 1

// Based on Michael Perry's answer * // needs to handle first.last@domain.com, first_last@domain.com and related syntaxes // also looks for first and last name within those email syntaxes

public class ParsedEmail
{
    private string _first;
    private string _last;
    private string _name;
    private string _domain;

    public ParsedEmail(string first, string last, string name, string domain)
    {
        _name = name;
        _domain = domain;

        // first.last@domain.com, first_last@domain.com etc. syntax
        char[] chars = { '.', '_', '+', '-' };
        var pos = _name.IndexOfAny(chars);

        if (string.IsNullOrWhiteSpace(_first) && string.IsNullOrWhiteSpace(_last) && pos > -1)
        {
            _first = _name.Substring(0, pos);
            _last = _name.Substring(pos+1);
        }
    }

    public string First
    {
        get { return _first; }
    }

    public string Last
    {
        get { return _last; }
    }

    public string Name
    {
        get { return _name; }
    }

    public string Domain
    {
        get { return _domain; }
    }

    public string Email
    {
        get
        {
            return Name + "@" + Domain;
        }
    }

    public override string ToString()
    {
        return Email;
    }

    public static IEnumerable SplitEmailList(string delimList)
    {
        delimList = delimList.Replace("\"", string.Empty);

        Regex re = new Regex(
                    @"((?\w*), (?\w*) <(?[a-zA-Z_0-9\.\+\-]+)@(?\w*\.\w*)>)|" +
                    @"((?\w*) (?\w*) <(?[a-zA-Z_0-9\.\+\-]+)@(?\w*\.\w*)>)|" +
                    @"((?[a-zA-Z_0-9\.\+\-]+)@(?\w*\.\w*))");


        MatchCollection matches = re.Matches(delimList);

        var parsedEmails =
                   (from Match match in matches
                    select new ParsedEmail(
                            match.Groups["first"].Value,
                            match.Groups["last"].Value,
                            match.Groups["name"].Value,
                            match.Groups["domain"].Value)).ToList();

        return parsedEmails;

    }


}