SEND EMAILS USING APEX

Email Methods

The following are methods for Email. All are instance methods.

• setBccSender(bcc)
  Indicates whether the email sender receives a copy of the email that is sent. For a mass mail, the sender is only copied on the first email sent.
• setReplyTo(replyAddress)
  Optional. The email address that receives the message when a recipient replies.
• setTemplateID(templateId)
  The ID of the template to be merged to create this email. Specify a value for setTemplateId, setHtmlBody, or setPlainTextBody. Or, you can define both setHtmlBody and setPlainTextBody.
• setSaveAsActivity(saveAsActivity)
  Optional. The default value is true, meaning the email is saved as an activity. This argument only applies if the recipient list is based on targetObjectId or targetObjectIds. If HTML email tracking is enabled for the organization, you will be able to track open rates.
• setSenderDisplayName(displayName)
  Optional. The name that appears on the From line of the email. This cannot be set if the object associated with a setOrgWideEmailAddressId for a SingleEmailMessage has defined its DisplayName field.
• setUseSignature(useSignature)
  Indicates whether the email includes an email signature if the user has one configured. The default is true, meaning if the user has a signature it is included in the email unless you specify false.

1. SINGLE EMAIL

public class Messagingdemo {     public static void sendSingleMessage(){                 Messaging.SingleEmailMessage mail=new Messaging.SingleEmailMessage();                 // Strings to hold the email addresses to which you are sending the email.         String[] toAdd=new String[]{'ankikadam@gmail.com'};         String[] ccAdd=new String[]{'ankitakadamrocks@gmail.com'};               // Assign the addresses for the To and CC lists to the mail object.       mail.setToAddresses(toAdd);       mail.setCcAddresses(ccAdd);               // Specify the address used when the recipients reply to the email.       mail.setReplyTo('ankikadam98@gmail.com');                 // Specify the name used as the display name.       mail.setSenderDisplayName('Ankita');       // Specify the subject line for your email address.       mail.setSubject('Welcome to salesforce!!!!!');                 // Specify the text content of the email.       mail.setPlainTextBody('Your ORG is setup');                         Messaging.sendEmail(new Messaging.SingleEmailMessage[]{mail});                                     } }

2. MASS EMAIL

MassEmailMessage Class

MassEmailMessage Constructors

The following are constructors for MassEmailMessage.

• MassEmailMessage()
  Creates a new instance of the Messaging.MassEmailMessage class.

MassEmailMessage Methods

The following are methods for MassEmailMessage. All are instance methods. All base email (Email class) methods are also available to the MassEmailMessage objects. These methods are described in Email Class (Base Email Methods).

• setDescription(description)
  The description of the email.
• setTargetObjectIds(targetObjectIds)
  A list of IDs of the contacts, leads, or users to which the email will be sent. The IDs you specify set the context and ensure that merge fields in the template contain the correct data. The objects must be of the same type (all contacts, all leads, or all users).
• setWhatIds(whatIds)
  Optional. If you specify a list of contacts for the targetObjectIds field, you can specify a list of whatIds as well. This helps to further ensure that merge fields in the template contain the correct data.

public class Messagingdemo {   public static void sendMassEmails(){                         EmailTemplate et = [SELECT Id,Subject, Body FROM EmailTemplate WHERE Name ='ApexEmailTemplateMessage'];         List<Contact> contacts=[Select Id,Email From Contact Where LastName='Eze'];         List<Id> conIds=new List<Id>();         List<Id> whatIds=new List<Id>();         for(Contact c: contacts) {             conIds.add(c.Id);             whatIds.add(et.Id);         }         Messaging.MassEmailMessage email = new Messaging.MassEmailMessage();         email.setTargetObjectIds(conIds);         email.setTemplateId(et.id);         Messaging.SendEmail(New Messaging.MassEmailMessage[] {email});           } }

LIMITS ON SENDING EMAILS IN APEX

• Max total of 5000 single emails to external addresses per day
• Max total of 5000 mass emails to external addresses per day
• Max total of 150 email recipients specified in the to, cc, and bcc fields
• Max size of 4,000 bytes for the to, cc, and bcc fields

Note: Each email sent to a duplicate email address counts as an individual email.

In case you exceed any of the mentioned limits, Salesforce will stop your code from running and provide you with either of the following errors: SINGLE_EMAIL_LIMIT_EXCEEDED or MASS_MAIL_LIMIT_EXCEEDED.

To prevent your code from sending any emails past a certain limit and thus avoid facing errors, the following method can be used Messaging.reserveMassEmailCapacity(50); with the number in the brackets indicating the max number of emails.