Parsing html using agility pack

I have a html to parse(see below)

<div id="mailbox" class="div-w div-m-0">
    <h2 class="h-line">InBox</h2>
    <div id="mailbox-table">
        <table id="maillist">
            <tr>
                <th>From</th>
                <th>Subject</th>
                <th>Date</th>
            </tr>
            <tr onclick="location='readmail.html?mid=welcome'" style="font-weight: bold;">
                <td>no-reply@somemail.net</td>
                <td>
                    <a href="readmail.html?mid=welcome">Hi, Welcome</a>
                </td>
                <td>
                    <span title="2016-02-16 13:23:50 UTC">just now</span>
                </td>
            </tr>
            <tr onclick="location='readmail.html?mid=T0wM6P'" style="font-weight: bold;">
                <td>someone@outlook.com</td>
                <td>
                    <a href="readmail.html?mid=T0wM6P">sa</a>
                </td>
                <td>
                    <span title="2016-02-16 13:24:04">just now</span>
                </td>
            </tr>
        </table>
    </div>
</div>

I need to parse links in <tr onclick= tags and email addresses in <td> tags.

So far i manged to get first occurance of email/link from my html.

HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(responseFromServer);

Could someone show me how is it properly done? Basically what i want to do is take all email addresses and links from html that are in said tags.

foreach (HtmlNode link in doc.DocumentNode.SelectNodes("//tr[@onclick]"))
{
    HtmlAttribute att = link.Attributes["onclick"];
    Console.WriteLine(att.Value);
}

EDIT: I need to store parsed values in a class (list) in pairs. Email (link) and senders Email.

public class ClassMailBox
{
    public string From { get; set; } 
    public string LinkToMail { get; set; }    

}