Message Inbox
You can now view emails sent through the "Contact TD" feature on the website.
Go Contact->Inbox:

You will then see a list of all messages sent. Click on the subject to view the message.

Quick Reply
Below the message, click Quick Reply to open a reply box. Type your response (you can use bold, italics, lists, and links to format it), then click Send Reply.

Your reply will be:
- Emailed directly to the person who sent the original message, with the reply already quoting their original message.
- Saved on the website, so it shows up as a threaded conversation right below the original message in your Inbox.
- Recorded in your Sent Box as well, so you have a record of everything you've sent.
Since the reply is sent with a Reply-To of your own email address, if the person replies again after that, it will go straight to your email inbox rather than back through the website.