A website may have a mailto: link on it that allows you to click the link and send an email to the author. For example:
To send a message to TOAST.net support, email us at email@example.com
The mailto: links can be configured to open email programs when clicked on. Examples of email programs are Gmail, Outlook, Windows Mail and ThunderBird. TOAST.net recommends configuring Google Chrome to use Gmail for mailto: links. When the mailto: link is setup for Gmail in Chrome it should also work in other web browsers like Internet Explorer.
Once your email account is set up in an email program, you will gain the ability to send from email links.