Create subfolders in iCloud email using iPhone only

Hi there, applenewbiee.

I see that you'd like to add additional mailboxes to keep your mail sorted as you'd like, and I'm happy to help.

Use mailboxes to organize emails on your iPhone, iPad, and iPod touch

Create custom mailboxes

Create custom mailboxes to sort your emails into categories like work, family, and more. Here’s how:

1. In the Mailboxes list, tap Edit in the upper-right corner, then tap New Mailbox.
2. Give your mailbox a name. If you have more than one email account set up on your device, tap Mailbox Location and choose the account where you want to create a mailbox.
3. Tap Save, then tap Done.

You can find your new mailbox in the Mailboxes list under the account where you created it. You can also create a shortcut for a custom mailbox so you can find it at the top of the Mailboxes list.

Take care!