What would occur if a single prospect is not both the recipient list and the...

In Pardot, when a prospect is included in both the recipient list and the suppression list for a list email, the suppression list takes precedence. This means the prospect will not receive the email. Importantly, being on the suppression list for one specific email send does not impact the prospect's status for future email sends. The suppression is specific to the email in question, and future email sends will proceed based on the prospect's inclusion in or exclusion from those specific recipient or suppression lists. This ensures that one-time suppression does not inadvertently affect the prospect’s eligibility for future communications.