After you're done editing your document, select the Download
option.
From the information section, click the more options icon, then click Download
Or from the document tool bar, click the download button.
Choose the format you'd like to download the document in; .pdf or .docx
Then, click Save on your computer.
Your downloaded document will appear in your downloads folder.
Open your preferred email provider e.g. Gmail.
Start a new email and attach your downloaded Lumin document.
Then click Send.