Email won’t delete

Boilermaker-Greene Said:

"Email won’t delete: When I try to delete an email message or send the message to the trash on my iPhone 15, it keeps appearing in my inbox. How can I fix this? [...]I don’t think I use an app password. This is the first I’m hearing of it."

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Troubleshooting eMail Syncing:

A. Restart your iPhone:

Having just installed an update, start with a restart: Restart your iPhone - Apple Support

B. Re-Sync the eMail Account:

Remove the eMail Account, and then add it back. If using an eMail provider, then remove this as a trusted device.

C. Use the Correct Mail Protocol:

POP3, IMAP4, and SMTP Mail Protocols:

This all has to do with the protocol used by the eMail provider for sending/receiving emails: POP3, IMAP4 or SMTP. So, contact your eMail Provider, and see which protocol to use for incoming and outgoing mail.

Boilermaker-Greene Said:

"Email won’t delete: When I try to delete an email message or send the message to the trash on my iPhone 15, it keeps appearing in my inbox. How can I fix this?"

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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). As an example, go here for gmail: Sign in with App Passwords - Google Account Help - Google

Re: Email won’t delete

Wondering if your iPhone has been updated to the latest iOS version:

Improvements and bug-fixes have been added in four versions since iOS 17

About iOS 17 Updates - Apple Support says iOS 17.1 is the latest version

No rudeness noticed ... no worries! I do appreciate you taking the time to reply.

Maybe something in the tips for iOS 17 will help:

How to: Delete and recover emails in Mail on iPhone - Apple Support

Thank you for your thoughtful reply! :-)

Thank you for letting us know we helped, Boilermaker-Greene :-)