Create outlook email button on the form that contains long body text

I want to create a email button on the form to open outloook and send directly to the customer. I use formula URL below

"mailto:"&""&[PR - CR - Email]&"\n"&"?subject="&"\n"&URLEncode([subject1_Warranty Determination]) &""&"&body="&""&([Email body])&"&"


The field [Email body] is a formula text. It works fine if the email body [Email body] is short, which means that I click a button, an outlook window opens up. However, I add a long body text, nothing has came up. Can anyone please advice on how to create a button email that can have a long body formatted text?

Thank you!