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I want unique urls to go out for each email, to do that I have links in format http://[servername]/responses/email/poll/[ref]/abc and want to substitute params in the URL.
I am sending the params e.g [servername] and [ref] along with subscribe request (via the API). But when the email is delivered it seems like the URL is not unique for each email (I expected it to be unique).
Am I missing something?
You need to include the fallback= in your tags.
[servername] will not work.
It must be set as [servername,fallback=].
So your URL should be: