I'm trying to add a detail link to an HTML Email template, to link to a related record on the object being merged into the e-mail.
I am aware of the process for adding a link/detail link for the object in the template by using
But my Communication object has a lookup to a Case called ParentId__c (which I can be sure is not null..) and I want to link to THIS object... my initial thought was to use
and it would traverse the relationship, and then merge out the Link value as with other objects, but this has not worked.
I'd rather not "build" the URL using "company URL" etc. and I'd like to avoid adding more custom fields to the object, but if these sorts of ideas are our only option...so be it.