returning to inbox after reading and deleting an email

I think someone might need to re-read the original post. It's quite clear what this user wants - what we have all been after for many years - and the only current solution is to use a third-party eMail client, like Outlook or what-have-you.

Summary workflow:-

Read eMail

Delete eMail

Return to Inbox (do NOT open the next eMail)

Quite simple really!

Good afternoon WTFanotherusername,

Welcome to the Apple Support Communities!

It sounds like you are having an issue with deleted emails returning to the Inbox, and we'd like to help.

Can you provide a little more information about what you are experiencing?

What email accounts are you working with on your iPhone? (Don't include the entire email address, just what is after the "@" symbol.) Are these POP or IMAP accounts?

Do you have the same issues with these two accounts when viewing your email on a different device or computer?

Do you have any mail accounts that are working as expected?

Are you using the native Mail app on your iPhone or a third-party app?

Has your iPhone 11 been updated to iOS 16.3.1?

Have you tried restarting your iPhone to refresh the settings and connection to the Internet?

Your responses to these questions will help us understand the issue better and work towards a resolution with you.

Take care.