Forward multiple emails

Presumably you are using the built-in native Mail App...

You can simultaneously forward multiple email by attaching the mail messages to a draft prior to sending. The process to attach a sent/received email to a draft email may not be immediately obvious…

To attached an existing or received email message to another:

1) When drafting a new email - or replying to a received email - tap the multitasking trigger-button (the three-dot ellipsis button) at the top of the draft message window - to expose the multitasking windowing options:

Tap the second button (split-screen, selecting left or right split) or third button (slide-over) window view. You will now have two visible windows - per your selected view, one of which will be your draft mail message editing window.

2) Using the other window, find the email message in the mailbox folder that you wish to attach to your new/reply email.

Touch-and-hold (i.e., a long touch) the mail message that you wish to attach to your draft mail; as soon as the message “pops” (you may see an action menu), simply drag the message to the insertion point of the draft mail window - and lift your finger.

The email that you dragged to the draft message window will be attached at the insertion point. Repeat for additional attachments as needed.

3) Finish drafting the email - then send or save the draft mail message as required.

Should you choose to do so, you can return the draft window to full screen or a different view; simply tap the multitasking trigger button (the ellipsis button) at the top of the draft window - then select view that you require from the button-options that you see.

NB: This description obviously applies only to the iPadOS multitasking environment.