'Mailchimp: UNSUB does not return the URL

|UNSUB| is not generating the automatic subscription URL. Instead of that, it return null in href attr. I have sent an email using send Test option. Please advice me.

Following tags are also not working.

|ARCHIVE| *|UPDATE_PROFILE|* |FORWARD|

EDIT:

It is working in campaign mode. It won't work in testing mode.



Solution 1:[1]

if you connect the campaign to an audience then the unsubscribe link arrives correct even in the test phase

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Sources

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Source: Stack Overflow

Solution Source
Solution 1 Altravista