An email message that includes a video file, either inserted into the message body, accessible through a hotlink to a Web site or accompanying it in an attachment (least desirable because many ISPs block executable attachments to avoid viruses).

Combining Email Marketing with Other Types of Marketing
Whether you choose to do your marketing online or offline, one thing does not change. This is the concept that no single marketing strategy will be as effective as a combination of two or more marketing strategies.