Send Meeting Invite Calendar Email From Apex
Sample Code:
Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
//Set To Addresss
mail.setToAddresses(new List<String>{'itzbiswajeet@gmail.com'});
//Set Email Subject
mail.setSubject('Test Meeting Invitation');
//Set Email Body
mail.setPlainTextBody('Test Meeting');
//Meeting Start Time & End Time
DateTime dt = DateTime.now().addDays(5);
//Start Date
String startDT = String.valueof(dt.year() +'0'+ dt.month() +''+ dt.day() + 'T010000Z');
//End Date
String endDT = String.valueof(dt.year() +'0'+ dt.month() +''+ dt.day() + 'T020000Z');
//Create Meeting Body
String meetingInviteBody = '';
meetingInviteBody += 'BEGIN:VCALENDAR\n';
meetingInviteBody += 'PRODID::-//hacksw/handcal//NONSGML v1.0//EN\n';
meetingInviteBody += 'VERSION:2.0\n';
meetingInviteBody += 'METHOD:PUBLISH\n';
meetingInviteBody += 'X-MS-OLK-FORCEINSPECTOROPEN:TRUE\n';
meetingInviteBody += 'BEGIN:VEVENT\n';
meetingInviteBody += 'CLASS:PUBLIC\n';
meetingInviteBody += 'CREATED:20150126T203709Z\n';
meetingInviteBody += 'DTEND:'+endDT+'\n';
meetingInviteBody += 'DTSTAMP:20150126T203709Z\n';
meetingInviteBody += 'DTSTART:'+startDT+'\n';
meetingInviteBody += 'LAST-MODIFIED:20150126T203709Z\n';
meetingInviteBody += 'LOCATION:USA\n';
meetingInviteBody += 'PRIORITY:5\n';
meetingInviteBody += 'SEQUENCE:0\n';
meetingInviteBody += 'SUMMARY:Test Meeting\n';
meetingInviteBody += 'LANGUAGE=en-us:Meeting\n';
meetingInviteBody += 'TRANSP:OPAQUE\n';
meetingInviteBody += 'X-ALT-DESC;FMTTYPE=text/html:<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"><HTML><HEAD><META NAME="Generator" CONTENT="MS Exchange Server version 08.00.0681.000"><TITLE></TITLE></HEAD><BODY><!-- Converted from text/plain format --></BODY></HTML>\n';
meetingInviteBody += 'X-MICROSOFT-CDO-BUSYSTATUS:BUSY\n';
meetingInviteBody += 'X-MICROSOFT-CDO-IMPORTANCE:1\n';
meetingInviteBody += 'END:VEVENT\n';
meetingInviteBody += 'END:VCALENDAR';
//Meeting Email Attachment
Messaging.EmailFileAttachment attach = new Messaging.EmailFileAttachment();
attach.Filename = 'meeting.ics';
attach.ContentType = 'text/calendar';
attach.Inline = true;
attach.Body = Blob.valueOf(meetingInviteBody);
//Attach Meeting Attachment
mail.setFileAttachments(new Messaging.EmailFileAttachment[] {attach});
//Send Email
Messaging.SendEmailResult[] er = Messaging.sendEmail(new Messaging.Email[] { mail });