For loop returns nothing when using function

I have a for loop that works perfectly like so:

from exchangelib import DELEGATE, Account, Configuration, Credentials, NTLM
from bs4 import BeautifulSoup
from exchangelib.properties import NewMailEvent, MovedEvent
from exchangelib_listener import Listener
import re

credentials = Credentials('[email protected]', 'EDDBIGHEAD90!')
config = Configuration(server='east.EXCH091.conglomo.net', credentials=credentials)
account = Account('[email protected]', credentials=credentials, config=config, autodiscover=False)
listener = Listener(account)

for item in account.inbox.all().order_by('-datetime_received')[:1]:
        soup = BeautifulSoup(item.body).get_text()
        print(soup) #this will print

This will ouput:

"""Last email's body information"""

However, if I try to add that into a function so the event listener can pick up on it, the forloop doesn't print anything.

from exchangelib import DELEGATE, Account, Configuration, Credentials, NTLM
from bs4 import BeautifulSoup
from exchangelib.properties import NewMailEvent, MovedEvent
from exchangelib_listener import Listener
import re

credentials = Credentials('[email protected]', 'EDDBIGHEAD90!')
config = Configuration(server='east.EXCH091.conglomo.net', credentials=credentials)
account = Account('[email protected]', credentials=credentials, config=config, autodiscover=False)
listener = Listener(account)

def new_messaged_received():
    print("test") #This will print
    for item in account.inbox.all().order_by('-datetime_received')[:1]:
        soup = BeautifulSoup(item.body).get_text()
        print(soup) #This will not print

listener.streaming_event_received += new_messaged_received
listener.listen(NewMailEvent)    

Let me know if I am missing anything to get that forloop to work inside the function so I can append it to the listener, if that is possible.

Thanks