1. Check the email size: if emails are too large, they can take a long time to download.

2. Check your internet connection: look at your internet speed, connection type, and connection strength.

3. Check your email settings: make sure your settings are optimized for email downloads.

4. Check for email viruses: make sure there is no malicious software on your computer that is slowing down the process.

5. Check your email folder: check if you have a lot of emails in your folder that are taking up space.