Please note: Automatically embedded the images will cause aspNetEmail to
locate every image in the web page, and download them. Once each image has been
downloaded, aspNetEmail will automatically embed the images into the email.
This increases the size of the email. For example, the home page of yahoo.com,
sent without embedded images is approximately 30K, however, with all of the
images embedded, the email is over 70K.
However, by embedding the images, the email can now be fully viewed offline,
without any broken image links.
*Only a small subset of supported character sets are listed here. For a more
complete listing, supported by aspNetEmail, go here.