How to save an email as PDF on iPhone & iPad?

Saving emails as PDF files using your iPhone or iPad works like this:

1. Open the "Mail" app & Select an email;
2. Click the arrow button on the tool bar (bottom);
3. Select the "Print" option;
4. Open the preview of your email;
5. Select "Share";
6. Open the PDF email in Apple Books;

If you can't see the option to open your email in Books, then select "More", and Books should be there.