After having created a PO with LSP.expert, you can choose to send it directly to your supplier via our platform.
When you're in the PO, you first have to click on Actions > Email purchase order.
You'll arrive in the sending screen. Here you can edit the text of the email if necessary. Then you click on Send.
To define a new generic text for your emails, you have to go to Settings > Document and email configuration > Emails.