Hey Brienne Edmonds - have you performed any checks to see whether members of the list were mailable? This would be the most immediately likely cause.
You can create a smart list with the rules "is member of list X, and not was delivered email Y", which will show you who on the list has been skipped. You can add/remove criteria to this list to help determine the cause here, e.g. "and unsubscribed = true" or "and marketing suspended = true".
This has been figured out:) All good to go- thank you