How do I add my signature on my iPhone/iPad?

 It's possible to install your signature to the default Mail app on iPhone or iPad

1. Go to the Si.gnatu.re preview page on your iPhone (you may find it easiest to email yourself the link)
2. Select and Copy the preview (drag over the preview until you have it all selected, then press Copy on the bubble menu)
3. Go to the signatures options in Settings > Mail > Signatures
4. Delete the current signature
5. Tap and hold then press Paste on the menu that appears
6. Now shake your iPhone and an Undo Change Attributes option appears, press Undo
   Your signature should now have the correct formatting!

You may wish to adjust the design so that it works best on the smaller iPhone screen, you can do this on your PC and the preview will update automatically on your iPhone, but you will need to reinstall to the Settings each time you make changes.