iOS 16.3 mail doesn’t suggest a destination folder when moving a message

Hello Jeff627,

This page can help out with organizing email in mailboxes: Organize email in mailboxes on iPhone - Apple Support

"Organize your mail with mailboxes

You can choose which mailboxes to view, reorder your mailboxes, create new ones, or rename or delete mailboxes. (Some mailboxes can’t be changed.)

To organize your mailboxes, tap  in the upper-left corner, tap Edit, then do any of the following:

• View mailboxes: Select the checkboxes next to the mailboxes you want to include in the mailboxes list.
• Reorder mailboxes: Touch and hold  next to a mailbox until it lifts up, then drag it to the new position.
• Create a new mailbox: Tap New Mailbox in the lower-right corner, then follow the onscreen instructions.
• Rename a mailbox: Tap the mailbox, then tap the title. Delete the name, then enter a new name.
• Delete a mailbox: Tap the mailbox, then tap Delete Mailbox.

Move or mark multiple emails

1. While viewing a list of emails, tap Edit.
2. Select the emails you want to move or mark by tapping their checkboxes.
3. Tip: To select multiple emails quickly, swipe down through the checkboxes.
4. Tap Mark, Move, or Trash at the bottom of the screen."

You may also try checking Settings > Mail > Accounts > Select the account > Account > Advanced, and then check to see if the mailboxes here are set as desired.

Cheers.

Hi Jeff627

Thanks for verifying that information for us. We recommend for you to contact Apple Support. They can review this further. You can contact them by using this link here: Apple - Get Support

Kind regards.