Gmail: Settings โ See all settings โ Signature โ Create new โ click into the editor โ use "Copy rendered" then paste (Ctrl/Cmd+V).
Outlook desktop: File โ Options โ Mail โ Signatures โ New โ paste HTML / rendered output.
Apple Mail: Mail โ Settings โ Signatures โ drag a placeholder image then use "Copy rendered" and paste over.
Edit your name & title: open this file in any text editor and change the values inside the signature block.