How to Set up and apply a filter to a mailbox

1 Activate a mailbox’s filter

First, go to the mailbox you want to filter; Mail remembers the filter settings you choose for each individual mailbox (they aren’t synced between devices, though). Tap the icon at the bottom left of the messages list to turn on the filter.

2 Multi- account mailboxes

To the right is a description of the active filter’s settings; tap it to edit them. If you’re viewing a mailbox that collates multiple accounts, such as All Inboxes, use items in the top group to limit the messages you see to just some of them.

3 Other filter settings

Choose whether messages must be unread, flagged, sent directly or copied to you, have attachments, or be from one of your designated VIPs. Set the visibility of each row’s check mark or position of its switch to suit your intent, then tap Done.