Gmail›
Settings (⚙) → General → Signature → click the field → Ctrl+V (or ⌘V on Mac) → Save changes at the bottom.
Outlook›
File → Options → Mail → Signatures → New → paste (Ctrl+V) → OK.
⚠ Important — if text appears black or formatting is lost:
Undo (Ctrl+Z), then paste using right-click → Keep Source Formatting (brush icon 🖌). Outlook Classic may reset text colors to black on a plain Ctrl+V — the "Keep Source Formatting" option fixes this.
Apple Mail›
Mail → Settings → Signatures → "+" → ⌘V.
Important: uncheck "Always match my default message font" — otherwise the signature loses its original fonts.
Keyboard shortcuts›
Ctrl/⌘+S — save the project as a new file
Ctrl/⌘+Shift+C — copy the signature to clipboard
? — show this help
Esc — close this modal