If you are dealing with Cox email not sending on Windows 10, then check out the steps:

• Check the email in other folders with Cox email that includes trash and spam folder.

• Check Cox email account filters and see if the new incoming email is not being filtered out.

• Ensure that you have not blocked the recipient.

• Also, make sure that the sender does not block you.

• Check the POP and IMAP settings, and you can’t even send an email if the Cox email SMTP server is not working.

• Lastly, disable the antivirus software installed on your device.