Apex code to send Mail

Requirement: Apex code to send mails.

Solution: This can be achieved by writing Apex code.

Apex Code:

public class EmailManager {
 // Public method

   public void sendMail(String address, String subject, String body) {

       // Create an email message object

       Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();

       String[] toAddresses = new String[] {address};

       mail.setToAddresses(toAddresses);

       mail.setSubject(subject);

       mail.setPlainTextBody(body);

       // Pass this email message to the built-in sendEmail method

       // of the Messaging class

       Messaging.SendEmailResult[] results = Messaging.sendEmail(

                                new Messaging.SingleEmailMessage[] { mail });
   }
}

Go to Developer console ===> Debug ===> Open Execute Anonymous Window:

EmailManagers Email = new EmailManagers();
Email.Sendmail('abc@xyz.com', 'Salesforce Blog!', 'Welcome to my Blog');

Cheers !