How can I add dynamic banner ads to the bottom of my emails?
<p>EDIT: Just wanted to add, that this would be for displaying advertisements from some sort of advertising affiliate program. They would be used until the user (sender) gets a local sponsor to purchase an ad to replace the affiliate program ad.</p>

<p>I'm working on something for a client that wants to have banner ads on the bottom of all the emails they send out. These emails are asked for, and not unsolicited. The ads only need to show up in the event the sender doesn't have any local sponsor ads signed up.</p>

<p>I've searched and searched and searched for hours across the net for anything to do with adding a banner ad to the bottom of an email. I thought about using html to call a php file renamed as a picture file to try and get the information for the ad, and just about everything else I can think of.</p>

<p>I know you can't run javascript in email, and rightly so... but I, for the life of me, can not figure out something.</p>

<p>Is there some sort of unspoken word across the internet to not talk about this sort of thing? With all the searches I've done, NOTHING has come up related to this. Everything comes up with mass email ads, and that isn't what we're interested in. We just want to add a banner ad to the bottom of an email that the sender is only sending because they have important information that the receivers have signed up to receive. Just need a small unobtrusive ad to show at the bottom.</p>

<p>Thanks for any help.</p>

<p>PS. This would be for ASP.net preferably, but if there is some solution that uses javascript/php on the server to make it work somehow, then I'll have to see if it implementable.</p>
