Sound in Your HTML Email Campaigns
Audio Email Marketing
By using basic HTML and an audio file you can make your email marketing campaigns more effective.
Benefits of Using HTML and an Audio File
Benefits of Using Audio in Your Email Campaigns
BGSOUND and LOOP
Play sound in a HTML email the same way you would do it in an HTML webpage.
<bgsound src="http://website.com/sounds/file.mp3" loop="infinite">
You could also use a wav file, but I doubt that would run on as many OS's. You can set the loop to a number, which would limit how many times the sound plays.
<bgsound src="http://website.com/sounds/file.mp3" loop="4">
Remember, you must use an absolute link (with the http://website.com/directory/subdirectory), for this to work when the user opens the HTML email.