iPhone emails not coming through anymore

Your emails in the Mail app might not show up because you either logged out of the email account(s), changed its passwords, or you turned the Mail app off in the iCloud settings which would effect the @icloud.com emails. Other reasons and how to fix it is explained here:

https://support.apple.com/en-us/HT211082

Nobody here can answer that question.

If you want help fixing it, we can do that: https://support.apple.com/en-us/HT211082