Workflow Send an mail _SPOCacheRead; _SPOCacheFull

Question

I have a workflow who needs to send update (as an alert) to those users having read access only. My list has unique permissions for each item and I need to make sure that only those who have access to the item get the email. As of now I send the item to
everyone, which means that those who don't have access will receive an "Access Denied" - which isn't a good User Experience.
Looking through the items of whom to send to I found two properties _SPOCacheRead and
_SPOCacheFull. My guess was that these properties would make the email to be sent to thos who had read access and full access respectively. While testing on my Sharepoint Online E3 subscription plan, this
isn't the case.
What does the _SPOCacheRead and _SPOCacheFull do, and how do I send email to only those with at least read access?
BennySkogberg

Answer 1

Hi Benny ,
The _SPOCacheRead and _SPOCacheFull are
 Portal Super Reader and Portal Super User  accounts as explained in the article:
Configure object cache user accounts in SharePoint Server 2013:
http://technet.microsoft.com/en-us/library/ff758656(v=office.15).aspx
Reference:
http://sharepoint.stackexchange.com/questions/97167/spo-cachefull-and-cacheread
As
 your list has unique permissions for each item, I recommend you create a Workflow Custom Action
 the SharePoint Designer 2013:
http://msdn.microsoft.com/en-us/library/office/jj163911(v=office.15).aspx
http://code.msdn.microsoft.com/office/SharePoint-2013-workflow-41e5c0f9
http://www.sharepoint-reference.com/Blog/Lists/Posts/Post.aspx?ID=37
Best Regards,
Eric
Eric Tao
TechNet Community Support