Is there a way to disable the email link when entering sales receipts?

Hi there, Tony. Thanks for posting your concern. 

For me to assist you appropriately, I'd like to ask for more details for the email link that you've mentioned. This way I can provide you with the best resolution. Any additional information, including screenshots, will be much appreciated.

I'll be on the lookout in the comment for your response. Feel free to comment down any additional assistance needed.  Keep safe.