Free tool
A clean email signature, in a minute.
Type, pick a look, copy.
No account, nothing stored.
Pasting it in
- Gmail Settings, See all settings, Signature, paste, Save Changes.
- Apple Mail Settings, Signatures, plus, untick "Always match my default message font", paste.
- Outlook Settings, Signatures, new, paste, save. Asks for source? Use Copy as HTML.