Hi Jessica,
Please refer the below similar communication,
https://community.mendix.com/link/space/connectors/questions/129164
Hope it helps!
Thanks & Regards,
Manikandan K
Hi Jessica,
Refer this article
Hi Jessica,
As the error says you don't have jakarta jars required for email,
check below screenshot of my userlib , make sure you have these jars are present in your userlib also if there are duplicates then delete lower version duplicates.
if not present , try downloading email connector again , it should come otherwise take a new blank app & download email connector and then copy these jars to your main project