To fix the incorrect time and date shown in your email, try the following steps:

1. Check your computer's time and date settings.
2. If you're using a third-party email platform, check its time and date settings.
3. Log out of the email and then log back in.
4. Open the email application in a private/Incognito window.
5. Ensure the computer is connected to the internet and has the correct time zone set.