Email signature and newsletter header, 600 px wide. Both are plain tables with inline styles, so they survive Gmail, Outlook and Apple Mail. Fonts fall back to web-safe faces: Georgia for Libre Baskerville, Arial for Satoshi.

To install the signature: open this file in a browser, select the signature (frame 1), copy, and paste into your mail app's signature settings. Before you do, host horizontal.png on the website and change the image address to that full https link, because mail apps cannot load local files. SVG logos do not work in most mail apps; use the PNG.

Text with a dotted underline is a placeholder. Signature HTML to paste into tools that take code: