It’s not possible to change it, but I have suggested a change in the code that will prevent emails being sent to previously used id numbers.
In the file classes/PDb_Signup.class.php on line 173, you’ll find:
set_transient( 'signup-'.$this->participant_id, 'sent', 120 );
The “120” means the email can’t be resent for two minutes. This is mainly to prevent refreshes from sending a duplicate. You can change that to any number of seconds or even 0 for “never.”
Problem there is if you’re relying on people re-registering to get a forgotten private link, it won’t send them the email if the transient never expires.
I have this fixed in the upcoming update.
thank you xnau.
is it possible to filter the list particapants view with more than 1 filter?
eg. sweepstakes on different pages with questions in order to win. I would like to filter source_page and the given answer.
The shortcode can take multiple filter items. Check this page for details.