Hello jenni179,
After reviewing your post, it seems like you archived an email and you cant find it now. Depending on the Advanced setting, it may be that if you do not see an Archive folder, the Archive Mailbox may be the All Mail folder.
To manage your iCloud email account, which ends with icloud.com, me.com, or mac.com, follow these steps:
- Go to Settings > Passwords & Accounts.
- Tap the iCloud email account that you want to manage.
- Tap iCloud, then scroll to the bottom of the screen and tap Mail.
- Tap Advanced.
If you have another type of email account:
- Go to Settings > Passwords & Accounts.
- Tap the email account that you want to manage.
- Tap Account, then tap Advanced.
From here, you can also choose whether to delete or archive messages. When you swipe left over a message that you want to discard, you'll see Archive or Trash based on the settings you select. Depending on your email provider, you might also have the option to remove emails automatically after a certain period of time."
How to delete emails on your iPhone, iPad, and iPod touch
Please don't hesitate to let us know if the steps resolved your issue or if you need additional assistance.
Thank you for using Apple Support Communities. Have a nice day.