Email Send through apex class

 public class singleEmailSend {

    // Public method

    public static void SingleMail(String address, String subject, String body) {

        // Create an email message object

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

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

        mail.setToAddresses(sendingTo);

        mail.setSubject(subject);

        mail.setPlainTextBody(body);

        //message sending

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

    }

}

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