Hi Ido:
Then this is a real problem because your documentation suggests that you can 
I was trying to figure this out myself.
If you go to this page that discusses wix-users-backend:
https://www.wix.com/code/reference/wix-users-backend.html#RegistrationResult
You will see an example that shows how to do this:
Note: wixUsers.emailUser() is showing the use of a ’ verifyLink ’ with a URL.
The implication being (unless there is a generic wix ‘verify-registration’ triggered email already coded to accept a “verifyLink” property) that you can indeed use URLs ;-).
In addition this example seems a little broken because it doesn’t correctly show where the approvalToken in the URL is pulled from the results object (it could be one of sessionToken or approvalToken per the RegistrationResult documentation - see below) the rest of the code implies that it should be a sessionToken but the naming of the email variable name uses approvalToken.
Now I have tried to use this variable in buttons and text links without much success.
My last attempt was to try to use the +Add Variable button in the text field edit dialogue for a text link. It ended up freezing the screen and had to close the browser window to restart my triggered email editing session…
Is there any chance I am misreading the documentation on this???
Wix team please provide more accurate and working examples. Thanks
Steve