I heard that I can use HTML for this, but since I have almost 0 knowledge about HTML I came here. I want to insert a clickable link instead of a plain text in my Google script. Is there a way to convert “+link+” into a clickable link in the mail?

  //Logger.log(data);

  var link;
  var birthdate;
  var emailAddress;

  var today = new Date();

  var rowNum=2;
  for (var i in data) {
    var row = data[i];
     
    link = row[4];
    birthdate = row[2];
    emailAddress = row[6];
    Logger.log(" i = "+i);
    /*
    Logger.log("today.getDay() "+today.getDate()+" today.getMonth() "+today.getMonth()+"n");
    Logger.log("birthdate.getDay() "+birthdate.getDate()+" birthdate.getMonth() "+birthdate.getMonth()+"n");
    */
    Logger.log("link "+link+" email "+emailAddress+" birthdate "+birthdate);
    if((today.getDate()==birthdate.getDate()) && (today.getMonth()==birthdate.getMonth())){
        
        Logger.log("link "+link+" email "+emailAddress+" birthdate "+birthdate);
        var body = "Hallo Support,nn"+
                "folgender Sender wurde zum Geburtstag gratuliert:n"+
                ""+link+""; 
               
        var subject = 'Geburtstagsbenachrichtungsmail';
        
        if(emailAddress!=null){
            MailApp.sendEmail(emailAddress, subject, body);
            sheet.getRange(rowNum, 8,1,1).setValue("Gesendet am "+new Date());            
        }
    } 
    rowNum++;   
  }  
}

So far I Googled for solutions and ended up here, since I don’t know much about HTML