emailHelper methods

emailHelper.cls

//From Salesforce documentation:
    public void sendEmail(String ToAddress) {
        // First, reserve email capacity for the current Apex transaction to ensure
        // that we won't exceed our daily email limits when sending email after
        // the current transaction is committed.
        Messaging.reserveSingleEmailCapacity(1);

        // Processes and actions involved in the Apex transaction occur next,
        // which conclude with sending a single email.

        // Now create a new single email message object
        // that will send out a single email to the addresses in the To, CC & BCC list.
        Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();


        // Strings to hold the email addresses to which you are sending the email.
        String[] toAddresses = new String[] {ToAddress};

        // Assign the recipient
        mail.setToAddresses(ToAddresses);

        // Specify the address used when the recipients reply to the email.
        mail.setReplyTo('support@acme.com');

        // Specify the name used as the display name.
        mail.setSenderDisplayName('Salesforce Support');

        // Specify the subject line for your email address.
        mail.setSubject('New Case Created : + case.Id');

        // Set to True if you want to BCC yourself on the email.
        mail.setBccSender(false);

        // Optionally append the salesforce.com email signature to the email.
        // The email address of the user executing the Apex Code will be used.
        mail.setUseSignature(false);

        // Specify the text content of the email.
        mail.setPlainTextBody('Your Case: has been created.');

        mail.setHtmlBody('Your case:<b> case.Id </b>has been created.<p>'+
             'To view your case <a href=https://***yourInstance***.salesforce.com/+case.Id+>click here.</a>');

        // Send the email you have created.
        Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });
    }

    //Simplified from Salesforce documentation
    public Messaging.SingleEmailMessage createSampleEmail (String toAddress) {

        // create single email message
        Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();

        // set values for email
        String[] toAddresses = new String[] {toAddress};
        mail.setToAddresses(ToAddresses);
        mail.setReplyTo('support@acme.com');
        mail.setSenderDisplayName('Salesforce Support');
        mail.setSubject('New Case Created : + case.Id');
        mail.setBccSender(false);
        mail.setUseSignature(false);

        mail.setPlainTextBody('Your Case: has been created.');
        mail.setHtmlBody('Your case:<b> case.Id </b>has been created.<p>'+
             'To view your case <a href=https://***yourInstance***.salesforce.com/+case.Id+>click here.</a>');

        return mail;
    }


    //Template sending using the documentation
    public void sendEmailUsingTemplate(String MyTemplateID, String MyRecipientID, String MyReplyTo, String MyDisplayName) {
        // First, reserve email capacity for the current Apex transaction to ensure
        // that we won't exceed our daily email limits when sending email after
        // the current transaction is committed.
        Messaging.reserveSingleEmailCapacity(1);

        // Processes and actions involved in the Apex transaction occur next,
        // which conclude with sending a single email.

        // Now create a new single email message object
        // that will send out a single email to the addresses in the To, CC & BCC list.
        Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();

        // Specify the reply-to and display name.
        mail.setReplyTo(MyReplyTo);
        mail.setSenderDisplayName(MyDisplayName);

        mail.setTemplateId(MyTemplateID);
        mail.setTargetObjectId(MyRecipientID);

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

    }