public static void sendEmail(String s, List<Idea> myIdea) {

 // Send an email back to the from email address of who created the idea
 String[] toAddresses = new String[] {s};

 // new instance of a single email message
 Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();

   mail.setToAddresses(toAddresses);
   mail.setReplyTo('ideas@acme.com');
   mail.setSenderDisplayName('Salesforce Ideas!');
   mail.setSubject('New Idea['+myIdea[0].Id+'] created - '+ myIdea[0].Title);
   mail.setBccSender(false);
   mail.setUseSignature(false);
   mail.setPlainTextBody('Your Idea: ' + myIdea[0].Title +' has been created \n Check out your new idea \n\n To watch you idea in salesforce.com click on this link \n https://na1-blitz04.soma.salesforce.com/ideas/viewIdea.apexp?id='+myIdea[0].Id);
 // Send the email
 Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });

    }

public class singleEmailExample
{
public PageReference sendingEmail()
{
Messaging.SingleEmailMessage semail = new Messaging.SingleEmailMessage();
String[] sendingTo = new String[]{‘XXXXXXXXXXXXXX@gmail.com’};
semail.setToAddresses(sendingTo);
String[] sendingToBccAdd = new String[]{‘XXXXXXXXX@gmail.com’};
semail.setBccAddresses(sendingToBccAdd);
String[] sendingTocAdd = new String[]{‘XXXXXXXXXXX@gmail.com’};
semail.setCcAddresses(sendingTocAdd);
semail.setSubject(‘Single Email message Example’);
semail.setPlainTextBody(‘Hello!!!!!!!!!!This is a test email to test single email message program’);
Messaging.sendEmail(new Messaging.SingleEmailMessage[] {semail});
return null;
}
}