If you want to control the From Email address in salesforce then you can control this with "Organization-Wide Email Addresses".
An organization-wide email address associates a single email address to a user profile. Each user in the profile can send email using this address. Users will share the same display name and email address
Step 1:- Setup "Organization-Wide Email Addresses"
1. Navigate Setup -> Email Administration -> Organization-Wide Email Addresses
2. Click on Add button.
3. Enter email Id and display name of sender.
4. In order to complete this process you need to get verified email id you are putting here
Step 2:- Fetch "Org Wide Email Address" in code like below code.
public class EmailHelper
{
public static void sendEmail()
{
Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
string body = 'Demo Body ';
String[] toAddresses = new String[] {'abc@gmail.com'};
mail.setToAddresses(toAddresses);
mail.setSubject('Test Subject');
mail.setSaveAsActivity(false);
for(OrgWideEmailAddress owa : [select id, Address, DisplayName from OrgWideEmailAddress])
{
if(owa.DisplayName.contains('System Admin'))
{
mail.setOrgWideEmailAddressId(owa.id);
}
}
mail.setHtmlBody(body);
Messaging.sendEmail(new Messaging.SingleEmailMessage[] { mail });
}
}
Some Use Full Link :-
http://salesforce.stackexchange.com/questions/5169/whats-the-advantage-of-using-massemailmessage-instead-of-multiple-singleemailme/5174#5174
http://developer.force.com/cookbook/recipe/creating-email-templates-and-automatically-sending-emails
Please let us know if this will help you
Thanks
Amit Chaudhary
1) isExecuting Returns true if the current context for the Apex code is a trigger, not a Visualforce page, a Web service, or anexecuteanonymous() API call.
2) isInsert Returns true if this trigger was fired due to an insert operation, from the Salesforce user interface, Apex, or theAPI.
3) isUpdate Returns true if this trigger was fired due to an update operation, from the Salesforce user interface, Apex, or theAPI.
4) isDelete Returns true if this trigger was fired due to a delete operation, from the Salesforce user interface, Apex, or theAPI.
5) isBefore Returns true if this trigger was fired before any record was saved.
6) isAfter Returns true if this trigger was fired after all records were saved.
7) isUndelete Returns true if this trigger was fired after a record is recovered from the Recycle Bin (that is, after an undelete operation from the Salesforce user interface, Apex, or the API.)
8) new Returns a list of the new versions of the sObject records.Note that this sObject list is only available in insert and update triggers, and the records can only be modified in before triggers.
9) newMap A map of IDs to the new versions of the sObject records. Note that this map is only available in before update, after insert, and after update triggers.
10) old Returns a list of the old versions of the sObject records.Note that this sObject list is only available in update and delete triggers.
11) oldMap A map of IDs to the old versions of the sObject records.Note that this map is only available in update and delete triggers.
12) size The total number of records in a trigger invocation, both old and new.
Sample trigger
trigger AccountTrigger on Account( after insert, after update, before insert, before update) { AccountTriggerHandler handler = new AccountTriggerHandler(Trigger.isExecuting, Trigger.size); if( Trigger.isInsert ) { if(Trigger.isBefore) { handler.OnBeforeInsert(trigger.New); } else { handler.OnAfterInsert(trigger.New); } } else if ( Trigger.isUpdate ) { if(Trigger.isBefore) { handler.OnBeforeUpdate(trigger.New ,trigger.Old,Trigger.NewMap,Trigger.OldMap); } else { handler.OnAfterUpdate(trigger.New ,trigger.Old,Trigger.NewMap,Trigger.OldMap); } } }Create one Trigger Handler Class
Create one Trigger Action Class
public without sharing class AccountActions { public static void updateContact ( List<Account> newAccount) { // Add your logic here } }SourcePlease check below post for full example of Trigger
http://amitsalesforce.blogspot.in/2015/06/trigger-best-practices-sample-trigger.html
Please let us know if this will help you.