Can't see sent email in iMail running on Sonoma 14.6.1 (23G93) desktop
My sent email for my work email is not showing up. I use iMail as my email client and have for years. It is not an iCloud email.
MacBook Pro 16″, macOS 14.6
Try to hover next to the grey word "Favourites" at the top of the sidebar, there should be a "plus"symbol in a circle, this allows you to add another mailbox into the sidebar.
Alternatively click on the triangle symbol to see or hide "favourites"