poplib's POP3_SSL not downloading latest email

[Sm Chats]

I have a small script which checks whether a mail sent by me to myself(i.e delivered to myself) has the same body as the sent message. The problem is that the sent message (sent by SMTP) isn't received by the POP3_SSL object I'm using. It shows mails from more than a month ago. I'm unable to figure out what's wrong. Please help me in correcting the code.
Thanks in advance. 🙏

Here's the script: https://github.com/schedutron/CPAP/blob/master/Chap3/myMail.py

Cheers,
Sam