thank you but this is exactly what is not working
here and I don't have any clue why Register activation does not do the emailing job and this is why I was trying to find another way
to send the activation email with a posthook!
As I posted : "nothing is sent (no trace of anything in my server's mailog nor in modx error log)" with the basic Register call:
This one (without posthook first then with my posthook):
&activationEmailSubject=`Please activate your account!`
Now in mu posthook I changed the $message création like this:
$message = $modx->getChunk('lgnActivateEmailTpl',$hook->getValues() );
This solve my issue regarding populating the placeholders coming from the register form but of course not for the +confirmurl.
So How to get the confirm url in a posthook ?