When I debuged the activity Get IMAP mail messages,it reported error below.
test has thrown an exception
Source: Get IMAP mail messages
Message: LOGIN failure, cannot convert mailbox: Unable to write to database because database would exceed its disk quota.
Exception Type: AuthenticationException
MailKit.Security.AuthenticationException: LOGIN failure, cannot convert mailbox: Unable to write to database because database would exceed its disk quota.
at UiPath.Mail.Activities.GetMailActivity.EndExecute(AsyncCodeActivityContext context, IAsyncResult result)
at System.Activities.AsyncCodeActivity.System.Activities.IAsyncCodeActivity.FinishExecution(AsyncCodeActivityContext context, IAsyncResult result)
at System.Activities.AsyncCodeActivity.CompleteAsyncCodeActivityData.CompleteAsyncCodeActivityWorkItem.Execute(ActivityExecutor executor, BookmarkManager bookmarkManager)
Try the same steps on gmail inbox with IMAP.gmail.com with 993. Diffrence between 143 and 993 port is 143 comes with STARTTLS encryption while 993 SSL/TLS encrypted which is more secure