Here you go// Declare the variablevar vEmail; var vSubject = "New Work Order/Project Authorization"var vBody = "Instructions:"// Check that the email field is not nullif (xfa.resolveNode("#subform[0].#subform[2].Table111[1].Row1.ReleasedIn toSystemBy").rawValue !== null) {     vEmail = xfa.resolveNo...

The script looks correct however, you are doing //Send Email script whether or not the vEmail value is null as it lies outside the if statementI''m assuming you want to send if vEmail is not null.  If that is the case then place the //Send Email script within the if statement.

  event.target.submitForm({cURL:"mailto: "+ vEmail + "?subject=" + vSubject +"&body=" + vBody + "&cc=" + vCC, cSubmitAs:"PDF",cCharset:"utf-8"});

// Get the field containers from each page. If you modify to this it will check field on all pages.for (var nPageCount = 0; nPageCount < xfa.host.numPages; nPageCount++) { var oFields = xfa.layout.pageContent(nPageCount, "field"); //var oFields = xfa.resolveNodes("form1..#field[*]"); for ( var i =...

Can you provide your sample form?

How have you scripted to e-mail via button?  Inherently, using the e-mail submit button or regular button with submit to URL as "mailto:username@company.com  it should check to ensure required fields are filled.You could also simply put   xfa.form.form1.execValidate();  on the click event of button....