This tutorial provides the steps required for archiving multiple email messages on iPhone or iPad. You can use the same procedures for deleting or moving more than one messages.
Step 1: Tap the Mail app on iPhone or iPad.
Step 2: Select the mailbox for archiving email messages then tap the Edit button.
Step 3: You can use the check box for selecting the email messages.
Step 4: Then tap the button available at the bottom of the screen to archive the message.
Step 5: You can also move the selected messages to a different fodder using the Move button or Flag the messages using the Mark option.
Screenshot of delete option available for mail account configured on iPad