Sharing is caring! Just click the three-dot icon on the upper right, select "Share List", then click "Add More Participants". Enter the email address connected to the Out of Milk account of the user with whom you'd like to share, and you're ready to go! To share your list with a non-Out of Milk email, you can choose "Share as Plain Text" at the bottom of the Share List screen. Your list can then be sent as an email, an SMS, or even just added to your clipboard so that you can paste into any app you choose!
Check out this great GIF on how to share a list with another Out of Milk user!