Just wanted to let everybody know, that I came across a strange effect, that when your HTML has a space right after the opening <A> tag.
Here's my code:
<a href="http://www.mysite.com/"> http://www.mysite.com/</a>
Although this space was a mistake, it is still valid HTML (by the way: it's usually not recommended to have a URI as a link text, because it can be considered as a phishing mail - but that's another issue).
So after sending the mail, it looked something like this:
<a href="http://mysite.cmail2.com/l/561911/4jsi161i/y"> http://www.mysite.com/</a>
Still perfect HTML. But when I click on that link (Outlook 2007 / Internet Explorer 7), the link in the address field of the browser looks like this:
Which of course is rubbish. I actually don't think, that this is a Campaign Monitor issue. But I tried to click this link also on my Mac (Apple Mail / Safari) and it shows the same effect.
I know, that I will have to be more carefull in the future and hope to help others with this information, but I'm also curious, WHY this happens...
That's an odd effect - I can't see why it should happen, as you mention the HTML itself is perfectly valid. Actually, I just ran a test myself, and in Apple Mail as well as Gmail, I could not replicate the problem.
Maybe something else was going on in your HTML?