And i think it never work

I can confirm that I have never seen this to work, but I think it would be a very good addition.

Currently I have to update the SID hardcoded in the email template every time that I copy a survey that uses this.

This is also needed for the following case: Some companies allow accessing the admin interface from the Intranet only e.g. secure.mydomain.com while making surveys accessible to the public using e.g. surveys.mydomain.com. But this means that when using tokens and the {SURVEYURL} placeholder, users will be emailed links that point to the domain only reachable from the Intranet.
You can solve this by hard-coding the URL and dynamically appending SID and TOKEN, e.g. https://surveys.mydomain.com/index.php/survey/index/sid/{SID}/newtest/Y/lang/en/token/{TOKEN}

But this only works when being able to use the {SID} placeholder properly.

I hope it's not that complex to extend the list of supported placeholders?!
If implemented, please also push the change to our LTS release since the user who reported this is paying for the LTS support.

@Mazi : NO : you don't need to make the url manually like this. You have information 2 times in manual

1. https://manual.limesurvey.org/Optional_settings#Advanced_Path_Settings
2. https://manual.limesurvey.org/Survey_participants#Wrong_domain_in_invitation.2Freminder_email_link

@DenisChenu: Thanks for the links, that indeed solves this problem.

Still, it would be very nice if we could use this placeholder for various reasons.

@Mazi : Please ALWAYS add a little lss file with one or two questions .

Fix committed to master branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=23045

This is really a new feature