You can export your subscriber list from the Letterman newsletter component as an XML file from Components > Letterman > Subscriber Manager. Hit the “Export Subscribers” button, and it will save an XML file to your computer, which you can open in Excel or OpenOffice.
Export Your Subscriber List
Step 1. Go to the Letterman “Subscriber Management” page.
Step 2. Click the Export Subscribers icon in the top right.
Step 3. Save the CSV file someplace you can find it again.
4. Open it with Excel or Open Office.