How do I change how my emails look?

1. Install and activate Document Designer from Plugins > Add New.
2. Open Settings > Document Designer and click the Emails tab.
3. Choose a look: Classic (white card, coloured top line), Flat, Minimal (thin outline) or Banner (a coloured band with your logo).
4. Set the accent colour for buttons, links and the top line, and the page colour behind the email. Leave the accent empty to keep the colour from General Settings > Mail.
5. Pick a font, the shape of the buttons (rounded, square or pill) and the logo position and height.
6. Watch the email preview on the right, then click Save design.

Every email the system sends uses the new look from then on. To change what an email says, edit it in Settings > Email Templates; see How do I edit an email template?.

Full guide: Design your invoices with Document Designer.