Pick your name, choose a style, then copy the signature into your email app. Both styles are built to look right in Outlook, Gmail and Apple Mail, on desktop and mobile.
Preview
Gmail
Settings → See all settings → General → Signature → Create new.
Click in the box, paste, then Save changes at the bottom of the page.
Outlook on the web and new Outlook
Settings → Accounts → Signatures → New signature.
Paste, choose it for new messages and replies, then Save.
Classic Outlook for Windows
Use Download for Outlook to save Secancy.htm.
Press Windows + R, open %APPDATA%\Microsoft\Signatures and move the file there.
Restart Outlook, then pick Secancy in File → Options → Mail → Signatures.
Apple Mail
Mail → Settings → Signatures → pick your account → +.
Untick "Always match my default message font", then paste.
Phones
Phone apps only take plain text. Use the Minimal style and type it in, or rely on the signature set in Outlook or Gmail on the web, which also applies when you send from their apps.