No Más Rebotes can process thousands of emails in minutes. Processing time depends on the size of the file, the mix of email types in the list and the current system volume. Small lists usually finish in minutes, while larger or more complex lists can take a few hours. You don’t have to wait for the complete result: you can see results while processing is still in progress.
If you’re short on time and only a few emails are left that need retrying, you can finish the process early and use the results obtained up to that point. Try processing your list with free credits to see how long it takes.