Target: Registering a new user with the Register snippet without a filled email field (The validation is done by SMS code).
During my tests it seems that the email field is required, even if it is not mentioned in &validate. Bad enough, the preHook is working after the validation.
But it is possible bypassing that problem. First add a hidden field in the form with the email:
<input type="hidden" name="email" value="[[++emailsender]]" />
The value is only a dummy and will be overwritten later by the following preHook:
<?php
$hook->setValue('email', '');
return true;
?>
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