If you are thinking of doing a promotion with a raffle, do it from Bunker DB Analytics.
Take a random sample from your database, with the amount you need. You can use this functionality to raffle winners of a promotion, to send a survey, to do A/B mailing tests, whatever comes to mind.
To do so, follow these steps:
Go to the "Consumers" section.
If necessary, apply filters to narrow your database.
Click the "Random Selection" button.
Enter the amount you want your section to contain.