To install email signature in the Mail App for iPhone, please follow these steps:
From your account dashboard click on the 'Mail' icon in 'Actions' menu.
This will send an email to your registered email address with the Signature Install Link.
Click on install link from the iPhone email and click on the 'Copy Signature' button to copy it to the clipboard.
Go to Settings > Mail scroll down and select 'Signature'
Double tap on the signature field and select Paste to insert you signature.
(Note: Your signature formatting will look incorrect – see next step).
Shake your iPhone – to display your signature graphics.
Tap the Undo button on the popup message.
Did something go wrong?
Please ensure you have followed Step 6 & 7. Shake your iPhone and tap Undo.