I'm trying to create a standard HTML merge field to get additional information from a sibling child relationship, but whenever I enter it into the email template SF automatically gets rid of it.
Example merge field:
Account has a Related Lookup field called Associate_c, the object Associate_c has a field called Email_Header__c.
Is this at all possible? What is a work around that doesn't involve creating a formula on an Account (which would work, but is messy)
My main goal is to have a different email header/footer but based on the Associate__c in the account rather than letterheads which won't work for our business.