To install your signature on GoDaddy, please follow these steps:
Make sure to use Chrome Browser (Safari or Firefox will mess up the formatting).
Click on the 'Copy Signature' button on the Install Signature popup to copy your signature.
In the GoDaddy email, click on the 'Settings' icon (cog icon) near the search bar on the right and select 'More Settings'.
Under Email Signature settings, click inside the Text Box and Paste your Email Signature (CTRL + V or CMD + V for Mac)
Tick the two options above the signature text-box.
Click the 'Save' button at the bottom.
That’s it, compose a new email to test your signature.