Based on the symptoms you described and the screenshot you provided, it seems that you are experiencing issues with sending and receiving emails in Outlook for Windows. The "Metered Connection Warning" message you see is related to your internet connection and may be affecting your ability to send and receive emails.
To resolve this issue, you can try updating your Office installation to version 2008 (Build 13127.20508) or a later version. You can do this by opening any Office application, such as Outlook or Word, selecting File, and then selecting Office Account or Account. Check the version number that is listed under Office Updates. If the version is earlier than 2008, select Update Options, and then select Update Now.
If updating the Office installation does not fix the issue, you can try one of the workarounds listed in the "Workaround" section of this article: https://learn.microsoft.com/en-us/outlook/troubleshoot/profiles-and-accounts/metered-connection-warning#workaround
It's also worth noting that the email address you provided, email@example.com, may not be able to send or receive emails due to a variety of reasons, such as incorrect settings or server issues. You may want to check with your email provider to ensure that your account is set up correctly and that there are no known issues with the server.