public class SendMailController {

    public String z { get; set; }

    public String y { get; set; }

    public String x { get; set; }

    public void saveMethod() {
        Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
        string[] xyz =new string[] {x};  
        mail.setToAddresses(xyz);
        mail.setSubject(y);
        mail.setHtmlBody(z);    
        Messaging.sendEmail(new Messaging.SingleEmailMessage[] {mail});
    }
   
  }

I'd like to run a query to find all Accounts without Contacts. I'm not sure how to form the SOQL query to acheive that.

 

Can anyone make any suggestions?

 

TIA