ga_users_add: Create or update user access to Google Analytics
Description
If you supply more than one email, then batch processing will be applied. Batching has special rules that give you 30 operations for the cost of one API call against your quota. When batching you will only get a TRUE result on successful batch, but individual entries may have failed. Check via ga_users_list afterwards and try to add individual linkIds to get more descriptive error messages.