Hello Guys , 
Basically i need to pass email ids present in my custom metadattype to CC in mailing logic when ever my label is IND .
in simple i need to emails  cc (those email id.) to users.

i just kept my piece of code whether i am getting the below error 

My custom metadatype contains two values 
1) label: Ind  2) Email_Address__c = ram@gmail.com sam@gmail.com hello@gmail.com
 
My piece of code  
  //calling custom metadata type
   map<string,string> emailmap = new map<string,string>();
   for(Email__mdt ce : [SELECT Label,Email_Address__c FROM Email__mdt])
   {  
   emailmap.put(ce.Label , ce.Email_Address__c);
   system.debug('emailmap====='+emailmap);
   }
    
   //Splitting CC email addresses and adding in array
     String[] ccAddresses = new String[]{};
    if(!emailmap.isEmpty())
    {
    system.debug('Map has values....');
    for(string ev:emailmap.Values())
      {
        system.debug('ev======'+ev);
        list<string> emailid = ev.split(',');
           ccAddresses.addAll(emailid);
        system.debug('ccAddresses======'+ccAddresses);
      }
    }
    
    Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
        mail.setToAddresses(sendTo);
        mail.setTargetObjectId(Userinfo.getUserId());
        mail.setCCAddresses(ccAddresses);
        mail.setSaveAsActivity(false);
        mail.setWhatId(leadRecId );
       Messaging.SendEmailResult [] result = Messaging.sendEmail(new Messaging.SingleEmailMessage[] {mail});

Error I am getting: 
System.EmailException: SendEmail failed. First exception on row 0; first error: INVALID_EMAIL_ADDRESS, Invalid to address : ram2929@gmail.com sam@gmail.com hello@gmail.com 

My analysis: i think split string is not working fine in my logic , can anyone please modify the piece of code.