// loop all subscriptions, as its ordered by identity, they get collected for each identity
for(Subscriber sub : subs){
try {
ident = sub.getIdentity();
if (latestSub == null || (!ident.equalsByPersistableKey(latestSub.getIdentity()))) {
// first time or next identity => prepare for a new user and send old data.
// send a mail
notifySubscribersByEmail(latestSub, items, subsToUpdate, translator, start, veto, mailLog, mailErrorLog);