Hello n11
Thanks for reaching out. If you are using QuickBooks Online you can not directly email the delivery note in the product.You can however download the delivery note.
In sales (on the left hand side)>click on the tick box to the left of the date of the transaction you want the delivery note for>go to batch actions>click print delivery note>if you move your mouse to the top right there should be a print symbol but to the right a down arrow,you can use that to download the delivery note, save it and then add as an attachment and send from your own personal email.
If you are using the Desktop product or you have any questions on this just reply back to this post
Thanks
Emma