What an absolute, ugly hack of a way do a simple thing. You need to add 2 or 3 custom fields to show the entire URL?! Why not just something like a double ampersand is replaced with your custom field in the URL? So you put something like <a href="http://www.google.com?id=%%custom.field.1%%> in your email. This is surely so common that the developers would have implemented it long ago. Do you actually have any developers? If so, they checked out of this job a long time ago. Please send this post to them.
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