I can’t receive any new email on my iPhone 13

Check if this help -> If you can't send or receive messages on your iPhone, iPad, or iPod touch

If you can't send or receive messages on your iPhone, iPad, or iPod touch - Apple Support

Alexandracortes Said:

"Email: I can’t receive any new email from any app and I don’t know how to fix it."

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Troubleshooting iPhone eMails:

Use a New App Password:

Do you use an App Password? If so, try a new App Password. Sometimes, changes (i.e. updates) are made to the device, and then mail server syncing becomes an issue (which is what a new App Password it intended to fix). Go here for gmail: Sign in with App Passwords - Google Account Help - Google