Email Notification to Contact after lead conversion in Salesforce

Sample Code:

trigger LeadTrigger on Lead ( after update ) {

    Set < Id > setContactIds = new Set < Id >();

   

    for ( Lead objLead : trigger.new ) {

       

        /* Getting Contact Ids from the Lead after conversion .

           ConvertedContactId in Lead contains the Contact Id to which the Lead is converted.

        */

        if ( objLead.IsConverted && objLead.IsConverted != trigger.oldMap.get( objLead.Id ).IsConverted )

            setContactIds.add( objLead.ConvertedContactId );

   

    }

   

    if ( setContactIds.size() > 0 ) {   

    

        List < String > toAddresses = new List < String >();

        List < Messaging.SingleEmailMessage > mails = new List < Messaging.SingleEmailMessage >();

        

        for ( Id conId : setContactIds ) {                       

            

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

            mail.setTargetObjectId( conId );

            mail.setSaveAsActivity( false );

            mail.setReplyTo( 'info@infallibletechie.com' );

            mail.setSenderDisplayName( 'Salesforce Support' );

            mail.setSubject( 'Welcome to InfallibleTechie' );

            mail.setHtmlBody( 'Hello,<br/>A very warm welcome from our community!<br/><br/>Regards,<br/>Admin' );   

            mails.add( mail );

            

        }

        

        Messaging.sendEmail( mails );

   

    }

}

Output: