Big sur mac mail problems

The woes of Big Sur and Mac Mail! Don't worry, I'm here to help you troubleshoot some common issues. Here are a few potential solutions to get you back to sending and receiving emails smoothly:

1. Authentication issues:

2. Connection issues:

3. IMAP vs. POP:

4. Junk Mail filter issues:

5. Mailbox corruption:

6. Big Sur-specific issues:

7. Third-party plugin issues:

If none of these solutions work, you may want to try resetting your Mac Mail settings or seeking further assistance from Apple Support or a professional IT expert.